The two principal combustion products are water vapor and carbon dioxide.两种主要的燃烧产物是水蒸气和二氧化碳。The car windows were fogged with vapor.车窗上满是雾气。When nitric acid is poured on copper, a brown vapor gives off.将硝酸倒在铜上, 会散发出一种棕色的蒸...
Ventilation: positive downdraft exhaust ventilation should be provided to maintain vapor concentration below TLV.通风: 为了使气体聚集程度维持在阀极限值之下,应提供通畅的向下棋流排气通风设施.Water vapor from the evaporative recovery process may be recondense...
Demonstrations, films, and videotapes are shown for your edification.采用了演示及播放电影和录像带的形式，以起到教育作用。The books were intended for the edification of the masses.这些书旨在教化民众。Good books give edification.好书给人以启迪....
While prolonging the smile, Dorothy closed her eyes again.笑容还荡漾在脸上, 多萝茜又闭上了眼睛.No doubt it will bring with it the means for prolonging life through improved medical care.无疑,这将给人们带来医疗保健条件的改善,使寿命延长.Did you know your sister&...