它们被瓶装，但也只有这么多压力那脆弱的围壁可以承受。
They are bottled up, but there is only so much pressure which frail walls can take.
平板围壁应该使用垂直扶强材和水平桁加强并且提供有扶手的步行平台。
The flat steel plate wall shall be strengthened by the vertical stiffeners and horizontal webs, and provided with walking platform with handrails.
主甲板机舱棚围壁和梯道环围等处安装的门为带闭门器的防火门。
Doors of engine casing and stair casing on main deck are of fire doors with self-closing device.
应用推荐