一般情况，弱电施工在线缆敷设完毕即可高一小段落。接着该安装设备支架，安装设备。
In general, the construction of the line can be completed in a small paragraph. Then install the equipment bracket, installation equipment.
在部分地区，由于受管道沿地形、交通等条件的制约，两条及以上的管道进行伴行敷设的情况将不可避免。
In some regions, due to such factors as terrain, traffic, etc. it is unavoidable that two or more oil or gas pipelines are laid in parallel.
介绍了钢管式钻具的制作、构造原理，以及在变电所接地网敷设中的应用情况。
The mechanical principle and the manufacture of the steel barrel type barer, and its operation in the substation ground network construction have been introduced.
应用推荐