underground launcher 中文意思是什麼
underground launcher
解釋
地下發射裝置- underground : adj 1 地（面）下的。2 隱蔽的，秘密的。3 （電影，報刊等）標新立異的，試刊的，試驗性而非正式的。4 ...
- launcher : n. 1. 彈射器；彈弓；石弩。2. （安裝在步槍上的）手榴彈發射器。3. （飛彈、太空飛船等的）發射裝置。
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As silo is required and it is not convenient for receiver and launcher installation and pig disassembly, underground installation is not adopted now
地下需設發射井，收發球筒及裝卸清管器均不方便，現已不採用。 -
The installation of pig receiver & launcher is divided into above ground installation and underground installation
收發球筒安裝分地面安裝及地下安裝兩種形式。 -
For above ground installation, the receiver & launcher shall be horizontal, which center is about 1m high from ground, and shall be connected to underground pipe by nozzle stub and bend but not skewed crossing connection
地面時，收發球筒為臥式，中心距地面高度一般為1米左右，通過短管及彎管與地下管線連接，不宜採取斜交叉連接。
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