After comparison, prefabricated piles of reinforced concrete are chosen.通过分析比较，确定选用钢筋混凝土预制桩。...high-quality, Scandinavian prefabricated wooden homes.斯堪的纳维亚优质的预制木屋The little prefabricated hut was lifted away by a huge cra...
But Emmons observed that at flashover, the hot smoky layer instantly drops down.但埃蒙斯观察到发生闪燃时, 热烟层瞬即下落.Before flashover occurs, a person in a burning room may crawl to safety along the floor.闪燃发生前, 着火房间里的人可沿着地板爬行到安全地带.Pol...