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单词
picogram
释义
WordReference Random House Unabridged Dictionary of American English © 2024
pi•co•gram
(pē
′
kə gram′, pī
′
-),
USA pronunciation
n.
Weights and Measures
one trillionth of a gram.
Abbr.:
pg
pico
- + -
gram
2
1950–55
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更新时间:2025/12/12 1:16:59