军团病是一种非常严重的、有时可以致命的肺炎.Legionnaires'disease is a serious and sometimes fatal form of pneumonia.空调系统 的输送管则是军团病细菌的绝佳温床.Air - conditioning ducts create a perfect Legionnaire's disease bacteria.由于大多数死者都是军团成员,因此称为军团病...
泵的抽气速率与气体的性质有关.Lashing velocity of pump is concerned with nature of air.现在已经采用了低温吸附技术和吸气离子泵的近代电子抽气设备.Recent electronic means of pumping using low temperature sorption techniques and getter - ion pumps have been introduce...
It has a dormer roof joining both gable ends.带天窗的斜屋顶连接着两边的山墙。A round or oval dormer window.一圆形或椭圆形的装饰窗.A dormer breaks the level roof.老虎窗破坏了房屋平顶的完整性....