From time to time a scraper is passed through the pipeline to remove this corrosion . 不时用清管器在油管内穿过,以清除这种锈蚀。
He gags on the bitter gasoline taste of the fuel line, pulls it from his mouth . 油管的汽油味使得他要作呕,他把油管从嘴里拿出来。
With a wrench he loosens the nuts which fuse the fuel line between tank and engine . 他用钳子扭松了接连油箱与发动机的油管上的螺钉帽。
Where pipelines cross swamps, rivers, or lakes they may be encased in concrete . 油管跨越沼泽地,河流、湖泊时,可以用混凝土管匣套起来。
The commission, in addition, gained jurisdiction over express and sleeping car companies, switches and spurs, and pipe lines . 委员会另外还获得管理快车和卧车公司、铁路侧线和支线以及油管线的权限。