1、A stop valve is arranged between the material discharge main pipe and the material outtake pipe.
卸料干管與出料管之間裝有節(jié)止閥；

2、Ball valve for opening and closing the main pipe and equipment used media.
球閥主要供開啟和關(guān)閉管道和設(shè)備介質(zhì)之用。

3、The main pipe burst in the severe cold, and the gas has been getting out.
主管道在嚴(yán)寒中凍裂了，煤氣泄漏了出來。

main pipe翻譯