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...
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...
The best wines are entitled to a numbered seal of quality.上等葡萄酒可以盖上带编号的优质产品印章。Ministers have put their seal of approval on the proposal.部长们已经批准了该提案。The letter bears the seal of the king.这封信有国王的封印....
By golly we can do something about it this time.这次我们确实可以采取行动了。"Golly," he says, "Isn't it exciting!"“天哪！”他说，“这真让人激动！”By Golly! Look at that big apple.哎呀! 你看那苹果多大!...
喇叭声整栋房子都能听见。The trumpet can be heard all over their house.汽车的喇叭声吵得他心烦意乱.The sound of car horns jangles his nerves.大街上来往车辆穿梭不停,喇叭声刺耳.Cars zoomed helter - skelter , honking belligerently....