... cross-over circulation 反循环 cross-over joint 交叉接头 cross-over line 跨线管线 ...
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cross-over joint case 共同接头箱
cross over joint reinforcement 跨缝筋
·2,447,543篇论文数据，部分数据来源于NoteExpress
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.
管件类： 弯头、三通、四通、活接头、卜芯、大小头、管帽、堵头、内丝、外丝、翻边、异径管。
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