Nomatter transporting gas or oil, there are pipelines, there are pipe fittings such as bend pipe, reducing joint, T-pipe, pipe cap and so on.
无论是用管道输气、输油，凡有管道的地方，都少不了弯头、异径接头、三通、管帽等管件。
The results have some guidance for the design and manufacture of T-pipe.
研究结果对三通的设计与制造有一定的指导作用。
The results have some guidance for the design and manufacture of T-pipe.
研究结果对三通的设计与制造有一定的指导作用。
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