fuel vapor

详细解释:汽油蒸气

例句：

A constricted throat in the air passage of a carburetor, causing a reduction in pressure that results in fuel vapor being drawn out of the carburetor bowl.文丘里管汽化器空气通道中的一段喉管，导致压力减小从而把燃料的蒸气抽出汽化器的碗状部分