activity ratio
activity ratio, Total:2 items.
The international standard classification for "activity ratio" includes: Geology. Meteorology. Hydrology , Mining and quarrying .
The Chinese standard classification for "activity ratio" includes: Hydrogeological survey .
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 13072-2010 Geological water samples - Determination of radioactive ratio 226Ra/228Ra - Emanation - β counting techniques
- GB/T 13072-1991 Method for measuring the activity ratios of 226Ra to 228Ra in geological water samples
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