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词汇
ketene
释义
ke·tene
AHD
[kēʹtēn']
D.J.
[ˈkiːˌtiːn]
K.K.
[ˈkiˌtin]
n.
(名词)
A pungent, toxic, colorless gas, C
2
H
2
O, used chiefly as an acetylation agent.
乙烯酮:一种有刺激性气味的有毒无色气体,C
2
H
2
O,主要用作乙酰化剂
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brak
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brake horsepower
brake light
brake lining
brakeman
brakemen
brake pad
brakes
brake shoe
braking
braking distance
braking time
braless
Bramah
Bramante
bramble
bramble
brambleberry
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更新时间:2026/9/20 23:43:01