The installation of pig receiver &launcher is divided into above ground installation and underground installation.
收发球筒安装分地面安装及地下安装两种形式。
Practice for Underground Installation of Flexible Reinforced Thermosetting Resin Pipe and Reinforced Plastic Mortar Pipe (08.
柔性增强热固性树脂管和增强塑料砂浆管的地下安装惯例（08。
As silo is required and it is not convenient for receiver and launcher installation and pig disassembly, underground installation is not adopted now.
地下安装需设发射井，安装收发球筒及装卸清管器均不方便，现已不采用。
The technical scheme of the utility model realizes underground installation of distribution equipments, and ensures that no distribution equipment is arranged on the ground.
本实用新型的技术方案实现了配电设备地下安装，保证地面上无配电设施。
The layout, design and installation of pipelines on the ground and underground projects shall strictly enforce the laws, regulations and standards concerning safety in production.
地上、地下工程管线规划布局、设计与敷设要严格执行有关安全生产的法律、法规和标准。
For the installation of the balance of the unit block, with the mining, and underground load conditions changed, the balance has been affected.
对于安装平衡块的抽油机，随着开采的进行，井下负载情况发生了变化，平衡受到了影响。
Assuming the blender pump costs are similar to E85 and the potential underground work, the cost could rise to more than XXXX for one blender pump installation.
假定燃料混合泵的成本与E85泵浦及可能需要进行的地下工程的成本差不多，那么安装一件燃料混合泵的成本就可能升至XXXX万美元。
The paper introduced the installation of the node information table and the high density layout of the fixed nodes in the heading roadway of the underground mine.
说明了节点信息表的设置和井下掘进巷道中固定节点的高密度布局；
The paper introduced the installation of the node information table and the high density layout of the fixed nodes in the heading roadway of the underground mine.
说明了节点信息表的设置和井下掘进巷道中固定节点的高密度布局；
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