| 单词 | pcv valve |
| 释义 | PCV valve in American English (ˌpiˌsiˈvi) a one-way valve on a motor-vehicle engine for regulating a pollution control system that draws crankcase fumes into the cylinders for burning Word origin p(ositive) c(rankcase) v(entilation)PCV valve in American Englishnoun Automobiles a valve used to control and direct the flow of gases during positive crankcase ventilation |
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