mi·cro·gram 
(mīkrō-grăm′)
(mīkrō-grăm′)n.
A unit of mass equal to one thousandth (10-3) of a milligram or one millionth (10-6) of a gram.
| 单词 | microgram |
| 释义 | mi·cro·gram (mīkrō-grăm′)n. A unit of mass equal to one thousandth (10-3) of a milligram or one millionth (10-6) of a gram. |
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