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。
2
Close the relevant valves on the oilpipeline and the water pipe line.
关闭相关的油管管路和水管管路上的阀门。
3
The large oil tank group in Lanzhou, which is a part of the state key project-the western oilpipeline project, is constructed on the saturated loess stratum for the first time in China.