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。
2
Open the relevant valves on the oilpipeline and the water pipe line.
打开油管管路和水管管路上有关的阀门。
3
This paper deals with the relationship between the fault movement and the pipeline deformation and presents some opinions as to how to design a buried oil and gas pipeline through fault area.