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单词
positive crankcase ventilation
释义
WordReference Random House Unabridged Dictionary of American English © 2024
pos
′
itive crank
′
case ventila′tion,
[
Auto.
]
Automotive
a means of reducing air pollution by directing the fumes from the crankcase of an engine into the intake manifold, so that they will be channeled into the cylinders and burned.
Abbr.:
PCV
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transed
transelement
transelementate
transempirical
transenna
transept
transesterification
transeunt
transf.
transf
trans-fat
trans fatty acid
trans-fatty acid
transfd.
transfd
transfect
transfection
transfer
transferable
transferable vote
transfer agent
transferal
transferase
transfer company
transferee
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更新时间:2026/8/13 18:02:44