well connecting pipe

常見(jiàn)例句

Tube wells in the ground, first install the valve connecting the end of tube wells three, in the well pipe at the top of the order to install valves and killing head and hands;
在地面的井管上，首先安裝底閥連接井管三通，在井管上方依次安裝閥門(mén)和和手壓井頭；
The paper introduced common troubles of city gas pipe on-line connecting works, their causions were found by trouble shooting, as well as the prevention measures were put forward.
分析了城市燃?xì)夤艿啦煌］攷膺B接作業(yè)中常見(jiàn)的故障，通過(guò)對(duì)故障原因的分析找出了主要原因，并提出相應(yīng)的預(yù)防措施。