... underexpansion 不完全膨胀,不足膨胀 underground launcher 地下发射器 undermotivation 动机不够 ...
基于40个网页-相关网页
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 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。
应用推荐