[化] 承插式管件 fitting socket: 管材接套fitting joint: 装配接头; 装配连接joint fitting: 对接配件; 连接接头socket joint: 插座接合套筒接合; 球窝关节; 球窝接后; 套节接头; 套筒联接ball and socket fitting: 球窝结合下载手机词典可随时随地查词查翻译