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Database: 365,228(8 Aug 2026)

observation time

observation time, Total:38 items.

The international standard classification for "observation time" includes: Geology. Meteorology. Hydrology , Astronomy. Geodesy. Geography , Hydraulic energy engineering , Seismic and vibration protection , Information sciences .

The Chinese standard classification for "observation time" includes: Oceanology , Mapping in general , Engineering hydrology , Engineering investigation and geotechnical engineering in general , Meteorology , Engineering seismic resistance , Library, Archives, Literature and Information .


Shanxi Provincial Standard of the People's Republic of China

  • DB14/T 2384-2021 Technical Specifications for Earthquake Macroscopic Observation
  • DB1410/T 110-2020 Requirements for the Construction and Management of Earthquake Macro Observation Network

国家市场监督管理总局、中国国家标准化管理委员会

  • GB/T 41448-2022 Geographic information—Observations and measurements
  • GB/T 14914.4-2021 The specification for marine observation―Part 4:Shore based radar observation
  • GB/T 14914.3-2021 The specification for marine observation―Part 3:Surface and subsurface buoy-based observation
  • GB/T 39420-2020 Marine observation terminology

Professional Standard - Water Conservancy

  • SL 21-2006 Standard for observations of precipitation
  • SL 21-1990 Precipitation Observation Specifications

Henan Provincial Standard of the People's Republic of China

Hunan Provincial Standard of the People's Republic of China

  • DB43/T 2645-2023 Meteorological Observation Specifications for Camellia Camellia

秦皇岛市市场监督管理局标准化科

  • DB1303/T 276-2019 Agricultural Meteorological Observation Specifications for Grape Planting

Shandong Provincial Standard of the People's Republic of China

  • DB3704/T 008-2020 Agricultural Meteorological Observation Specification Pomegranate
  • DB3717/T 7-2021 Peony Agricultural Meteorological Observation Specifications

Inner Mongolia Provincial Standard of the People's Republic of China

  • DB1507/T 92-2023 "Agricultural Meteorological Observation Specifications Shaguo"
  • DB1505/T 15-2023 Agricultural meteorological observation specifications red pepper

Anhui Provincial Standard of the People's Republic of China

Gansu Provincial Standard of the People's Republic of China

  • DB62/T 4509-2022 Specifications for Agricultural Meteorological Observation of Big Cherry
  • DB62/T 4288-2021 Peach Agricultural Meteorological Observation Specifications

Sichuan Provincial Standard of the People's Republic of China

  • DB5108/T 15-2019 Specifications for Meteorological Observation of Kiwifruit Agronomy

Guizhou Provincial Standard of the People's Republic of China

  • DB52/T 1754-2023 Agricultural Meteorological Observation Specifications Chili Peppers

Jiangxi Provincial Standard of the People's Republic of China

Professional Standard - Traffic

  • JTS 132-2015 Specification for Hydrometry for Port and Waterway Engineering

Professional Standard - Electricity

  • DL/T 5006-2007 Code for rock mass observations of hydroelectric and water consercancy engineering

Ningxia Provincial Standard of the People's Republic of China

  • DB64/T 1858-2022 Agricultural meteorological observation specifications for Ningxia cabbage

Qinghai Provincial Standard of the People's Republic of China

  • DB63/T 1137-2012 Field Observation and Record of Phenology of Forage Grass of Elymus genus

Professional Standard - Meteorology

  • QX/T 249-2014 Specifications for fresh wateraquaculture meteorological observation

Professional Standard - Earthquake

  • DB/T 34-2009 The method of earthquake-related geoelectrical monitoring-Geoelectric field observation
  • DB/T 97-2024 Specification for qualityassessment of seismic observation dataGNSS observation

Professional Standard - Ocean

  • HY/T 058-2010 Operational norms for archives on the oceanographic survey observation and monitoring

European Telecommunications Standards Institute (ETSI)

  • ETSI TS 101 528-2000 Digital Cellular Telecommunications System (Phase 2+); Location Services (LCS); Broadcast Network Assistance for Enhanced Observed Time Difference (E-OTD) and Global Positioning System (GPS) Positioning Methods GSM 04.35 Version 8.1.0 Release 1999
  • ETSI TS 144 035-2002 Digital Cellular Telecommunications System (Phase 2+); Location Service (LCS); Broadcast Network Assistance for Enhanced Observed Time Difference (E-OTD) and Global Positioning System (GPS) Positioning Methods 3GPP TS 44.035 Version 5.0.0 Release 5
  • ETSI TS 144 035-2001 Digital Cellular Telecommunications System (Phase 2+); Location Service (LCS); Broadcast Network Assistance for Enhanced Observed Time Difference (E-OTD) and Global Positioning System (GPS) Positioning Methods 3GPP TS 44.035 Version 4.0.0 Release 4
  • ETSI TS 144 035-2014 Digital cellular telecommunications system (Phase 2+); Location Services (LCS); Broadcast network assistance for Enhanced Observed Time Difference (E-OTD) and Global Positioning System (GPS) positioning methods (V12.0.0; 3GPP TS 44.035 version 12.0.0 Rele
  • ETSI TS 144 035-2005 Digital cellular telecommunications system (Phase 2+); Location Service (LCS); Broadcast network assistance for Enhanced Observed Time Difference (E-OTD) and Global Positioning System (GPS) positioning methods 3GPP TS 44.035 version 6.0.0 Release 6
  • ETSI TS 144 035-2009 Digital cellular telecommunications system (Phase 2+); Location Services (LCS); Broadcast network assistance for Enhanced Observed Time Difference (E-OTD) and Global Positioning System (GPS) positioning methods V8.0.0; 3GPP TS 44.035 version 8.0.0 Releas
  • ETSI TS 144 035-2007 Digital cellular telecommunications system (Phase 2+); Location Services (LCS); Broadcast network assistance for Enhanced Observed Time Difference (E-OTD) and Global Positioning System (GPS) positioning methods V7.0.0; 3GPP TS 44.035 version 7.0.0 Releas

ITU-R - International Telecommunication Union/ITU Radiocommunication Sector