泄油管路：将液压元件泄露的油液导入回油管或油箱。
Drain line: the hydraulic components leaked oil into the return pipe or tank.
不锈钢波纹膨胀管、挠性软管、补偿器、金属软管，回油管，网套管。
Flexible Hose, Compensator, Oil Return Tube, Flexible Pipe, Metal Pipe, Stainless Steel Corrugated Expansion Pipe.
油管路、主机回油过滤器易堵塞；
The oil pipeline, the main engine oil discharge filter easy to stop up;
油管路、主机回油过滤器易堵塞；
The oil pipeline, the main engine oil discharge filter easy to stop up;
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