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...
What's up with Pasadena, Pomona, Santa Ana and all that?帕萨迪纳市, 波莫纳, 圣安娜和其他地方 怎么样 ?Objective : To investigate the feature of antinuclear antibodies ( ANA ) negative systemic lupus erythematosus ( SLE ).目的: 探讨抗核抗体 ( A...