drainage pipe line
英
美
- 排水管道(线)
双语例句
- The drainage system is being improved with additional drainage channels dug to ensure the pitch remains in top condition.
我们挖掘了额外的排水管道以便使排水系统保持最佳状态。 - To prevent water damage, the valve must be properly connected to a discharge line which terminates at an adequate drain.
为了防止水的破坏，这些阀门必须与排水管道连接，以便能够将水排到适当的排水口。
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