vapor

This system traps the gasoline vapor escaping from the fuel tank and carburetor .

这个系统能收集从燃油箱和化油器泄漏出来的汽油蒸气。

The phenomenon of vapor explosions threatens the safe storage and transportation of liquefied petroleum gas.

液化石油气蒸汽爆炸是对其安全储运构成很大威胁的一种观象。

And so, you make not only water vapor, NOX but you make some nitrous oxides, NOX, or nox as it is known, and this is the precursor to smog.

这样不仅仅得到的水蒸气，但是你会得到一些氮氧化物，或者如大家所知到的nox，这是烟雾的前驱体。