本底计数 běndǐjìshù background count Definitions Defs Origin Strokes Stroke Words Sentences Sents 本底计数 本底計數 běndǐjìshù background count a measurement of radiation or noise level taken from the environment when no specific source is being measured
本底计数 本底計數 běndǐjìshù background count a measurement of radiation or noise level taken from the environment when no specific source is being measured
