flange

凸缘、法兰

The two pipes are joined by bolting the flanges together.

这两根管子是用螺栓把法兰接在一起固定的。

轮缘、边缘

The flange on the train wheel keeps it on the rail.

火车车轮的轮缘可以让车轮不会脱离轨道。

装凸缘、使成凸缘专业用语

The ends of the tubes are flanged before they are welded.

这些管子的末端在焊接前会先加工出凸缘。