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。
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。
The boiled water bank is connected with the exhaust pipe by the cold water tank.
开水箱接有的排气管经由冷水箱。
The boiled water bank is connected with the exhaust pipe by the cold water tank.
开水箱接有的排气管经由冷水箱。
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