main pipe造句

1、A stop valve is arranged between the material discharge main pipe and the material outtake pipe.
卸料干管与出料管之间装有节止阀；

2、Ball valve for opening and closing the main pipe and equipment used media.
球阀主要供开启和关闭管道和设备介质之用。

3、The main pipe burst in the severe cold, and the gas has been getting out.
主管道在严寒中冻裂了，煤气泄漏了出来。