straight screw thread connection 直螺纹连接
straight-through connection 直通连接
straight handpiece for slip-joint connection 滑节连接体用直形机头
straight screw connection 直螺纹连接
straight thread connection 直螺纹连接
straight threaded connection 直螺纹连接
straight screw sleeve connection 钢筋套筒连接
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