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...
A pronounced haziness may signify spoilage, while brilliant, clear or dull wines are generally sound.显著的模糊状态可能意味着葡萄酒变坏了, 而闪耀, 清晰或阴暗的葡萄酒通常都是健康的.The striped band round a policeman's sleeve is to signify that he is on ...
他眼睛里有异物.He has some foreign matter in his eye.她手指肿大是内有异物所致.The swelling on her finger was caused by a foreign body in it.异物为什么如此有害,其确切原因尚不清楚.Exactly why the foreign body is so deleterious is not clear....