bypass hose meaning in English

旁通软管
旁通水管

Tighten bypass hose at test cock no . 1 , open test cock no . 1
紧固测试旋塞1号上的旁路软管，开启测试旋塞1号。
Remove bypass hose from test cock no . 1 , open shutoff valve no . 1
从测试旋塞1号上拆卸旁路软管，开启1号关闭阀。
Open needle valve " a " high side and vent needle valve to vent air from bypass hose
开启针形阀“ a ”高端和排气针形阀，从旁路软管排放空气。
Connect bypass hose between vent needle valve and loosely connect to test cock no . 1
在排气针形阀上连接旁路软管，并将其松散连接到测试旋塞1号上。