union joint 管接合; 管节连接; 管结合; 管子接头; 联管节接头; 联节管; 连接头 great national union 民族大团结 .
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吊索与钢管拱连接节点 Joints between cable and tubular arch
连接两节管子(生产油管、套管或衬管等)所用的带螺纹的连接件。
A threaded coupling used to join two lengths of pipe such as production tubing, casing or liner.
管道连接第四审判庭的空气感应管，控制阀安排控制气体燃料进入第四节室气流。
A pipe connects the fourth chamber to the air induction pipe, and the control valve is arranged to control the flow of gaseous fuel into the fourth chamber.
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