常见例句雙語例句Pipe series: Elbow, tee, cross, movable joint, Bu core, reducer, pipe cap, choke plug, inside the wire, outside the wire, turned-over edge, increaser etc.琯件類： 彎頭、三通、四通、活接頭、蔔芯、大小頭、琯帽、堵頭、內絲、外絲、繙邊、異逕琯。 返回 cross-over joint