隔离设备实际上就是安装在建筑物开挖时最底层的巨大的橡胶钢铁垫，建筑物就坐在这些垫子上面。
The isolation devices are essentially giant rubber-and-steel pads that are installed at the very bottom of the excavation for a building, which then simply sits on top of the pads.
当开挖暴露于来自邻近工艺运转或动设备的气体时，受限空间存在潜在的风险。
Confined Space Potentials exist when the excavation is exposed to hazardous gases from nearby process operations or mobile equipment.
介绍了采用定向钻非开挖技术的基本工作原理与设备组成。
The basic work principle and equipment composition of non-excavation technique of directional drilling machine have been introduced in this paper.
应用推荐