drain line

基本解釋

A proper drain line connected to the valve outlet and run to a safe place of disposal must be installed.
必須安裝一個適當(dāng)?shù)呐判构艿溃B接閥門的出水口，并且流向安全的地方。
The next day, Michael tells Abruzzi he needs help getting a bottle of drain line root control. “Sooner than later.”
第二天，Michael告訴Abruzzi他需要他幫忙搞一瓶下水道除草劑，“越快越好”。
A drain line should be attached to the relief valve to channel any potential discharge to a safe place of disposal.
在安全閥上應(yīng)該連接排水管道，將任何可能的排放引導(dǎo)到安全的處置地方。