作业帮6.81ng/ml转换为ug/L是多少
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6.81ng/ml转换为ug/L是多少
6.81ng/ml转换为ug/L是多少
6.81ng/ml转换为ug/L是多少
1ng/mL=1ug/L; 因为1ng=0.001ug;1mL=0.001L 所以1ng/mL=0.001ug/0.001L=1ug/L.6.81ng/ml=6.81ug/l