Simple in-ground installation requires no major excavation and provides quick and easy access for battery replacement when required.
简单的地下安装不需要很深的挖掘，当需要替换电池时可提供快速简易的访问。
Horizontal and vertical installation along the wall, along the shaft installation, along the ground installation.
沿墙水平和垂直安装、沿竖井安装、沿地面安装。
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。
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。
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