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单词
usnic acid
释义
usnic acid
/us"nik/
,
Pharm.
an antibacterial substance, C
18
H
16
O
7
, derived from lichens of the genus
Usnea.
[
1840-50; < NL
Usn
(
ea
) USNEA + -IC
]
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atmospheric
atmospheric boundary layer.
atmospheric braking
atmospheric electricity
atmospheric engine
atmospheric inversion
atmospheric perspective.
atmospheric pressure
atmospherics
atmospheric tide
atmospheric window
Atna
at. no.
atoll
atom
atom bomb.
atom-bomb
atomic
atomic age
atomic bomb
atomic clock
atomic cocktail
atomic energy.
Atomic Energy Commission
atomic hydrogen
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更新时间:2025/10/9 10:53:24