double superfluid

double superfluid, Total:172 items.

The international standard classification for "double superfluid" includes: Chemical analysis , Volumetric equipment and measurements , Flow in closed conduits , Biology. Botany. Zoology , Measurement of fluid flow , Textile fabrics , Materials and components for shipbuilding , Geology. Meteorology. Hydrology .

The Chinese standard classification for "double superfluid" includes: Metal physical property test method , Bare wire , Basic standards and general methods , Oil and gas gathering and transportation equipment , Flow capacity and material level instrument , Other food processing machinery , Hydrology and water conservancy instrument , Mechanics Measurement , Silk and silk textile products , Marine hydraulic/pneumatic elements and accessories , Operating equipment, instrument and meter .

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 18604-2001 Measurement of natural gas flow by ultrasonic flow meter
GB/T 18604-2014 Measurement of Natural Gas Flow by Gas Ultrasonic Flow Meters
GB/T 36989-2018 Measurement of liquid hydrocarbons by ultrasonic flow meters
GB/T 34041.2-2017 Measurement of fluid flow in closed conduits―Ultrasonic meters for gas―Part 2:Meters for industrial applications
GB/T 18604-2023 Measurement of natural gas flow by gas ultrasonic flow meters
GB/T 26490-2011 Methods for measuring super hydrophobicity of nanomaterials
GB/T 38481-2020 Determination of ultralow-frequency mutations for microorganisms. Duplex sequencing
GB/T 42472-2023 Critical current measurement―Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires
GB/T 26489-2011 Methods for measuring super amphiphilicity of nanomaterials

Group Standards of the People's Republic of China

T/CIDA 0007-2021 Box-shaped ultrasonic flow meter for open channels
T/JSGT 002-2020 Exhaust gas ultrasonic velocity and flow meters
T/GMES 020-2022 Double barrel countercurrent sand washing machine
T/ZJCX 0040-2023 Two-stage closed mixed flow fan
T/NTJGXH 070-2019 Technical Regulations for the Superfine Powder Processing of Agaricus bisporus
T/JSGT 003-2020 Exhaust gas velocity and flow monitoring Ultrasonic time difference method

Professional Standard - Light Industry

QB/T 1825-1993 Extraordinarily High Temperature Sterilizer with Double Sets of Coil Tube

Professional Standard - Water Conservancy

SL/T 186-1997 Ultrasonic current meter

National Metrological Verification Regulations of the People's Republic of China

JJG(交通) 030-2004 Water Transport Engineering-Acoustic Current Meter
JJG 030-2020 Ultrasonic Velocimeter
JJG 1030-2007 Verification Regulation of Ultrasonic Flowmeters

Professional Standard - Textile

FZ/T 43038-2016 Polyester-polyamide Microfibre Polar Fleece

Professional Standard - Urban Construction

CJ/T 122-2000 Ultrasonic Doppler flowmeter

Military Standard of the People's Republic of China-General Armament Department

GJB 6592-2008 Interface requirements for VHF duplex frequency hopping radio

Professional Standard - Agriculture

67药典四部-2020 0531 Supercritical fluid chromatography
86药典四部-2015 0531 Supercritical fluid chromatography

Military Standard of the People's Republic of China-Commission of Science,Technology and Industry for National Defence

GJB 1947-1994 General specification for two-waveband radio station of short wave and ultra shortwave

Professional Standard - Machinery

JB/T 14052-2025 Bidirectional Converter for DC Energy Storage System
JB/T 13391-2018 Double helix rotor flowmeter

Professional Standard-Ships

CB/T 1018-1995 Marine Bi-directional Spill Valve Groups

Professional Standard - Energy and Power Planning

DL/T 1706-2017 Quality of ultra-high voltage DC converter transformer oil in service

Professional Standard - Electron

SJ/T 11895-2023 Specification for electric double layer supercapacitors for energy-saving elevators

Anhui Provincial Standard of the People's Republic of China

DB34/T 3787-2021 Urban supermarket logistics service specification

Professional Standard - Environmental Protection

HJ/T 15-1996 Supersonic flowmeter of wastewater

Professional Standard - Medicine

YY/T 0767-2009 Ultrasonic colour flow imaging systems

Hunan Provincial Standard of the People's Republic of China

DB43/T 2095-2021 Technical regulations for double-cropping super rice after nitrogen fertilizer transfer to strengthen panicle

Professional Standard - Traffic

JT/T 569-2004 Water transport engineering - Acoustic current meter

Zhejiang Provincial Standard of the People's Republic of China

DB33/T 964-2015 Chain supermarket logistics distribution specification

British Standards Institution (BSI)

BS EN IEC 61788-24:2018 Superconductivity - Critical current measurement. Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires
BS EN 61788-2:1999 Superconductivity - Critical current measurement - DC critical current of Nb3Sn composite superconductors
BS EN 61788-2:2007 Superconductivity - Critical current measurement - D.C. critical current of Nb3Sn composite superconductors
BS EN 61788-1:1998 Superconductivity-Critical current measurement. DC critical current of Cu/Nb-Ti composite superconductors
BS EN 61788-1:2007 Superconductivity - Critical current measurement - D.C. critical current of Nb-Ti composite superconductors
BS EN IEC 61788-26:2020 Superconductivity - Critical current measurement. DC critical current of RE-Ba-Cu-O composite superconductors
BS EN 61788-3:2003 Superconductivity - Critical current measurement - DC critical current of Ag-sheathed Bi-2212 and Bi-2223 oxide superconductors
BS EN 61788-3:2001 Superconductivity - Critical current measurement - DC critical current of Ag-sheathed Bi-2212 and Bi-2223 oxide superconductors
PD IEC/TS 61936-2:2015 Power installations exceeding 1 kV a.c. and 1,5 kV d.c.. d.c.
BS EN 61685:2002 Ultrasonics. Flow measurement systems. Flow test object
18/30363361 DC BS EN 61788-26. Superconductivity. Part 26. Critical current measurement. DC critical current of RE-Ba-Cu-O composite superconductors
BS EN 61788-3:2006 Superconductivity - Part 3: Critical current measurement - DC critical current of Ag- and/or Ag alloy-sheathed Bi-2212 and Bi-2223 oxide superconductors

Gosstandart of Russia

GOST 18604.15-1977 Bipolar microwave oscillator transistors. Techniques for measuring critical current
GOST R IEC 61685-2020 Ultrasonics. Flow measurement systems. Flow test object

International Electrotechnical Commission (IEC)

IEC 61788-24:2018 Superconductivity - Part 24: Critical current measurement - Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires
IEC 61936-2:2023 Power installations exceeding 1 kV AC and 1,5 kV DC - Part 2: DC
IEC 61936-1:2021 CMV Power installations exceeding 1 kV AC and 1,5 kV DC - Part 1: AC
IEC 61788-1:2006 Superconductivity - Part 1: Critical current measurement - DC critical current of Nb-Ti composite superconductors
IEC 61788-2:1999 Superconductivity - Part 2: Critical current measurement - DC critical current of Nb<(Index)3>Sn composite superconductors
IEC 61788-1:1998 Superconductivity - Part 1: Critical current measurement - DC critical current of Cu/Nb-Ti composite superconductors
IEC 61788-26:2020 Superconductivity - Part 26: Critical current measurement - DC critical current of RE-Ba-Cu-O composite superconductors
IEC 61788-2:2006 Superconductivity - Part 2: Critical current measurement - DC critical current of Nb<(Index)3>Sn composite superconductors

American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)

ASHRAE OR-05-16-2-2005 Altered Bi-Phase Flow Regime in Supermarket Evaporative Coils: Laboratory and Field Experiences

Swedish Institute for Standards

SS-EN IEC 61788-24:2019 Superconductivity - Part 24: Critical current measurement - Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires
SS-EN 61788-1:2007 Superconductivity - Part 1: Critical current measurement - DC critical current of Nb-Ti composite superconductors
SS-EN 61788-2:2007 Superconductivity - Part 2: Critical current measurement - DC critical current of Nb3Sn composite superconductors
SS-EN IEC 61788-26:2020 Superconductivity - Part 26: Critical current measurement - DC critical current of RE-Ba-Cu-O composite superconductors
SS-EN 61685:2002 Ultrasonics - Flow measurement systems - Flow test object

Korean Agency for Technology and Standards (KATS)

KS C IEC 61788-24:2021 Superconductivity — Part 24: Critical current measurement — Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires
KS C IEC 61788-24-2021 Superconductivity — Part 24: Critical current measurement — Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires
KS C IEC 61788-1-2020 Superconductivity － Part 1: Critical current measurement － DC critical current of Cu/Nb-Ti composite superconductors
KS C IEC 61788-1:2009 Superconductivity － Part 1: Critical current measurement － DC critical current of Cu/Nb-Ti composite superconductors
KS C IEC 61788-1-2009(2020) Superconductivity － Part 1: Critical current measurement － DC critical current of Cu/Nb-Ti composite superconductors
KS C IEC 61788-26-2022 Superconductivity — Part 26: Critical current measurement —DC critical current of RE-Ba-Cu-O composite superconductors
KS C IEC 61788-26:2022 Superconductivity — Part 26: Critical current measurement —DC critical current of RE-Ba-Cu-O composite superconductors
KS C 1210-1985 ALTERNATING-CURRENT WATT-HOUR METERS for extra-Precision
KS D 0406-1999 Superconductivity－Test method－Part 1：Critical current－Section 1：DC critical current of Cu/Nb-Ti composite superconductors
KS C IEC 61788-3:2016 Superconductivity－Part 3：Critical current measurement－DC critical current of Ag－sheathed Bi－2212 and Bi－2223 oxide superconductors
KS C IEC 61788-3-2016 Superconductivity － Part 3: Critical current measurement － DC critical current of Ag － sheathed Bi － 2212 and Bi － 2223 oxide superconductors
KS C 6111-6-2009(2020) Measurement method for the DC critical current of superconducting power cables

Association Francaise de Normalisation

NF C31-888-24*NF EN IEC 61788-24:2018 Superconductivity - Part 24 : critical current measurement - Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires
NF C13-936-2*NF EN IEC 61936-2:2023 Power installations exceeding 1 kV AC and 1,5 kV DC - Part 2 : DC
NF C31-888-2:2001 Superconductivity - Part 2 : critical current measurement - DC critical current of Nb3Sn composite superconductors.
NF C31-888-2*NF EN 61788-2:2007 Superconductivity - Part 2 : critical current measurement - DC critical current of Nb3Sn composite superconductors
NF C31-888-1*NF EN 61788-1:2007 Superconductivity - Part 1 : critical current measurement - DC critical current of Nb-Ti composite superconductors.
NF C31-888-1:2002 Superconductivity - Part 1 : critical current measurement - DC critical current of Cu/Nb-Ti composite superconductors.
NF EN 61788-1:2007 Superconductivity - Part 1: critical current measurement - Continuous critical current of Nb-Ti composite superconductors
NF C97-912*NF EN 61685:2006 Ultrasonics - Flow measurement systems - Flow test object.
NF EN 61685:2006 Ultrasound - Flow measurement systems - Flow test setup
NF EN 61788-2:2007 Superconductivity - Part 2: Critical current measurement - Continuous critical current of Nb3Sn composite superconductors
NF EN 60947-6-1:2006 Ultrasound - Flow measurement systems - Flow test setup
NF C31-888-3:2006 Superconductivity - Part 3 : critical current measurement - DC critical current of Ag-sheathed Bi-2212 and Bi-2223 oxide superconductors.

European Committee for Electrotechnical Standardization（CENELEC）

EN IEC 61788-24:2018 Superconductivity - Part 24: Critical current measurement - Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires
EN 61788-2:2007 Superconductivity Part 2: Critical current measurement - DC critical current of Nb3Sn composite superconductors
EN 61788-2:1999 Superconductivity Part 2: Critical current measurement - DC critical current of Nb3Sn composite superconductors
EN 61788-1:2007 Superconductivity Part 1: Critical current measurement - DC critical current of Nb-Ti composite superconductors
EN 61788-1:1998 Superconductivity Part 1: Critical Current Measurement DC Critical Current of Cu/Nb-Ti Composite Superconductors
EN IEC 61788-26:2020 Superconductivity - Part 26: Critical current measurement - DC critical current of RE-Ba-Cu-O composite superconductors

Spanish Association for Standardization (UNE)

UNE-EN IEC 61788-24:2018 Superconductivity - Part 24: Critical current measurement - Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires (Endorsed by Asociación Española de Normalización in October of 2018.)
UNE-EN 61788-2:2000 Superconductivity - Part 2: Critical current measurement - DC critical current of Nb3Sn composite superconductors
UNE-EN 61788-1:1999 SUPERCONDUCTIVITY. PART 1: CRITICAL CURRENT MEASUREMENT. DC CRITICAL CURRENT OF CU/NB-TI COMPOSITE SUPERCONDUCTORS.
UNE-EN IEC 61788-26:2020 Superconductivity - Part 26: Critical current measurement - DC critical current of RE-Ba-Cu-O composite superconductors (Endorsed by Asociación Española de Normalización in October of 2020.)
UNE-EN 61788-2:2007 Superconductivity -- Part 2: Critical current measurement - DC critical current of Nb3Sn composite superconductors (IEC 61788-2:2006). (Endorsed by AENOR in April of 2007.)
UNE-EN 61788-1:2007 Superconductivity -- Part 1: Critical current measurement - DC critical current of Nb-Ti composite superconductors. (IEC 61788-1:2006). (Endorsed by AENOR in April of 2007.)
UNE-EN 61685:2001 Ultrasonics - Flow measurement systems - Flow test object (Endorsed by AENOR in March of 2006.)

National Association of Corrosion Engineers (NACE)

NACE Paper 07631-2016 Unexpected Sour Cracking Resistance of Duplex and Superduplex Steels
NACE Paper 03255-2003 EXPERIENCES WITH SUPERDUPLEX STAINLESS STEEL IN SEAWATER

German Institute for Standardization

DIN EN IEC 61936-1:2023-02*VDE 0101-1:2023-02 Power installations exceeding 1 kV AC and 1,5 kV DC
DIN 30652-1 E:2025-10 Draft Document - Excess flow valves - Part 1: Excess flow valves for gas installation
DIN EN 61788-24 E:2016-12 Draft Document - Superconductivity - Part 24: Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires (IEC 90/368/CD:2016)
DIN EN IEC 61788-24:2019-07 Superconductivity - Part 24: Critical current measurement - Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires (IEC 61788-24:2018); German version EN IEC 61788-24:2018
DIN 30652-2 E:2025-10 Draft Document - Excess flow valves - Part 2: Excess flow valves for service lines
DIN EN 61685:2003-02 Ultrasonics - Flow measurement systems - Flow test object (IEC 61685:2001); German Version EN 61685:2001
DIN EN 61685:2003 Ultrasonics - Flow measurement systems - Flow test object (IEC 61685:2001); German Version EN 61685:2001
DIN EN IEC 61788-26:2022 Superconductivity - Part 26: Critical current measurement - DC critical current of RE-Ba-Cu-O composite superconductors (IEC 61788-26:2020); German version EN IEC 61788-26:2020

United States Navy

NAVY MS18098 NOTICE 2-1996 VOLT-AMMETER, DUAL POINTER, DIRECT CURRENT
NAVY MS18098-1963 VOLT-AMMETER, DUAL POINTER, DIRECT CURRENT
NAVY MS18098 VALID NOTICE 1-1988 VOLT-AMMETER, DUAL POINTER, DIRECT CURRENT
NAVY MIL-V-5622 A-1963 VOLT-AMMETER: DUAL POINTER DIRECT CURRENT
NAVY MIL-V-5622 A NOTICE 1-1996 VOLT-AMMETER: DUAL POINTER DIRECT CURRENT

ISUZU - Isuzu Motors Ltd.

ISC-C71-004B-2017 Super hypoid gear lubricant

Comitato Elettrotecnico Italiano

CEI EN 61788-2:2007 Superconductivity - Part 2: Critical current measurement - DC critical current of Nb3Sn composite superconductors
CEI EN 61788-1:2007 Superconductivity - Part 1: Critical current measurement - DC critical current of Nb-Ti composite superconductors
CEI EN IEC 61936-2:2024 Power installations exceeding 1 kV AC and 1,5 kV DC - Part 2: DC
CEI EN IEC 61788-26:2021 Superconductivity Part 26: Critical current measurement - DC critical current of RE-Ba-Cu-O composite superconductors
CEI EN 61685:2002 Ultrasonics - Flow measurement systems - Flow test object

Danish Standards Foundation

DANSK DS/EN 61788-2:2007 Superconductivity - Part 2: Critical current measurement - DC critical current of Nb3Sn composite superconductors
DANSK DS/EN 61788-1:2007 Superconductivity - Part 1: Critical current measurement - DC critical current of Nb-Ti composite superconductors
DS/EN 61788-2:2007 Superconductivity - Part 2: Critical current measurement - DC critical current of Nb3Sn composite superconductors
DS/EN 61788-1:2007 Superconductivity - Part 1: Critical current measurement - DC critical current of Nb-Ti composite superconductors
DANSK DS/EN IEC 61788-26:2020 Superconductivity – Part 26: Critical current measurement – DC critical current of RE-Ba-Cu-O composite superconductors
DS/EN 61685:2002 Ultrasonics - Flow measurement systems - Flow test object
DANSK DS/EN 61685:2002 Ultrasonics - Flow measurement systems - Flow test object

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO IEC 61788-2:2022 Superconductivity - Part 2: Critical current measurement - DC critical current of Nb3Sn composite superconductors
BH GSO IEC 61788-1:2016 Superconductivity - Part 1: Critical current measurement - DC critical current of Cu/Nb-Ti composite superconductors

GCC Standardization Organization

GSO IEC 61788-2:2021 Superconductivity - Part 2: Critical current measurement - DC critical current of Nb3Sn composite superconductors
BH GSO IEC 61936-2:2024 Power installations exceeding 1 kV AC and 1,5 kV DC - Part 2: DC
GSO IEC 61685:2015 Ultrasonics - Flow measurement systems - Flow test object
GSO IEC 61936-2:2024 Power installations exceeding 1 kV AC and 1,5 kV DC - Part 2: DC

Czech Standards Institute (UNMZ)

CSN 25 3126-1953 Limit gauges. Double-sided plug gauges, diameter over 30 up to 100 mm
CSN 33 4000-1987 Electric-engineering rules. Requirements for communication equipment resistibility against overvoltage and overcurrent

Japanese Industrial Standards Committee (JISC)

JIS H 7302:2000 Superconductivity -- Part 2: Critical current measurement -- DC critical current of Nb3Sn composite superconductors
JIS H 7301:2009 Superconductivity -- Part 1: Critical current measurement -- DC critical current of Nb-Ti composite superconductors
JIS H 7302:2009 Superconductivity -- Part 2: Critical current measurement -- DC critical current of Nb3Sn composite superconductors
JIS H 7305:2003 Superconductivity -- Part 3: Critical current measurement -- DC critical current of Ag-sheathed Bi-2212 and Bi-2223 oxide superconductors

The Directorate General of Specifications and Metrology (DGSM)

OS GSO IEC 61788-1:2014 Superconductivity - Part 1: Critical current measurement - DC critical current of Cu/Nb-Ti composite superconductors
OS GSO IEC 61685:2015 Ultrasonics - Flow measurement systems - Flow test object

Engineering Sciences Data Unit (ESDU)

SPC-M3-2-2007 Stability of two-fluid flow through a channel.

Association for Electrical, Electronic & Information Technologies (VDE)

VDE 0390-2-2000*DIN EN 61788-2:2000 Superconductivity Part 2: Measuring the critical current AC critical current (Nb3Sn composite superconductors)
VDE 0390-1-1999*DIN EN 61788-1:1999 Superconductivity – Part 1: Critical current measurement – DC critical current of Cu/Nb-Ti composite superconductors
VDE 0390-26-2019 Superconductivity - Part 26: Critical current measurement - DC critical current of RE-Ba-Cu-O composite superconductors (IEC 90/407/CD:2018); Text in German and English

Bureau of Indian Standards

IS 15674-2006 Flow measurement of natural gas by ultrasonic meter
IS/IEC 61685-2001 Ultrasonics —— Flow Measurement Systems —— Flow Test Object

Association of German Mechanical Engineers

DVS 0946-2004 Recommendations for welding austenitic-ferritic duplex and superduplex stainless steels
VDI/VDE 2642-1994 Measurement of fluid flow by means of ultrasonic flowmeters in fully floated circular cross-section closed conduits

German Welding Society

DVS 0946:2004-02 Recommended for welding non-rusting austenitic-ferritic duplex and superduplex steels

Lithuanian Standards Office

LST EN 61788-2-2007 Superconductivity - Part 2: Critical current measurement - DC critical current of Nb3Sn composite superconductors (IEC 61788-2:2006)
LST EN 61788-1-2007 Superconductivity - Part 1: Critical current measurement - DC critical current of Nb-Ti composite superconductors (IEC 61788-1:2006)

Society of Automotive Engineers (SAE)

SAE AS27647D BEARING, BALL, AIRFRAME, ANTI-FRICTION, EXTRA WIDE, DOUBLE ROW, INTERMEDIATE DUTY
SAE AS27647C Bearing, Ball, Airframe, Anti-Friction, Extra Wide, Double Row, Intermediate Duty
SAE AS27647A Bearing, Ball, Airframe, Anti-Friction, Extra Wide, Double Row, Intermediate Duty
SAE AS27647B Bearing, Ball, Airframe, Anti-Friction, Extra Wide, Double Row, Intermediate Duty
SAE AS27647E BEARING, BALL, AIRFRAME, ANTI-FRICTION, EXTRA WIDE, DOUBLE ROW, INTERMEDIATE DUTY
SAE AS27647 Bearing, Ball, Airframe, Anti-Friction, Extra Wide, Double Row, Intermediate Duty
SAE AS27647G BEARING, BALL, AIRFRAME, ANTI-FRICTION, EXTRA WIDE, DOUBLE ROW, INTERMEDIATE DUTY
SAE AS27647F BEARING, BALL, AIRFRAME, ANTI-FRICTION, EXTRA WIDE, DOUBLE ROW, INTERMEDIATE DUTY
SAE AS27647G-2023 BEARING, BALL, AIRFRAME ANTI-FRICTION, EXTRA WIDE DOUBLE ROW, INTERMEDIATE DUTY

Standard Association of Australia （SAA）

AS 1029:1974 A.C. Contactors (up to and including 1000 volts a.c.)

Association for Materials Protection and Performance (AMPP)

AMPP Paper 17689-2022 Super Duplex Stainless Steel Pump Component Failure Case

Military Standards (MIL-STD)

MIL MIL-PRF-19500/647C-2006 SEMICONDUCTOR DEVICE, DIODE, SILICON, POWER RECTIFIER, DUAL, ULTRAFAST, TYPES 1N6778 AND 1N6779, JAN, JANTX, JANTXV, AND JANS(SUPERSEDING MIL-PRF-19500/647B)
MIL MIL-PRF-19500/616G-2009 Diode, Silicon, Power Rectifier, Dual, Common Cathode or Anode Center Tap, Ultrafast, Types 1N6657 through 1N6659 JAN, JANTX, JANTXV, and JANS

American Society for Testing and Materials (ASTM)

ASTM B714-82(1997)e1 Method for Determining DC Critical Current of Composite Superconductors

American Society of Safety Engineers

ASSE 1015-2021 Double Check Backflow Preventer

Polski Komitet Normalizacyjny (PKN)

PN-EN IEC 61788-26-2021-03 E Superconductivity - Part 26: Critical current measurement - DC critical current of RE-Ba-Cu-O composite superconductors (IEC 61788-26:2020)

International Organization for Standardization (ISO)

ISO 6418:1985 Liquid flow measurement in open channels — Ultrasonic (acoustic) velocity meters

Others: super amphipathic,superfluid,double superfluid,First-class undergraduate double ten thousand plan