Drain line: the hydraulic components leaked oil into the return pipe or tank.
泄油管路：将液压元件泄露的油液导入回油管或油箱。
污泥把排水管阻塞了。
Put a bucket under the hole in the drain pipe to catch any overflow.
在排水管的那个洞下放个水桶接住漏出的水。
First you must drain the dirty water out and then clean the pipe.
你必须先让污水排出去，然后再清洗管道。
Periodical inspection and maintenance of water supply system, supplying pipe, tape and tank, drain pipe.
给水装置的管线、头、箱及排水管道的定期检查和维修。
Open the pipe to let the water drain off.
把管子打开，让水流出去。
A land drain is usually a pipe buried in farm land but it may also be an open channel.
农田的排水系统通常是埋在农田中的管子，但也可以是明渠。
A water-spraying device is composed of a drain pipe and a water-spraying plate.
由泄水管和梳形散水板组成淋水装置。
A water-spraying device is composed of a drain pipe and a water-spraying plate.
由泄水管和梳形散水板组成淋水装置。
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