threaded pin with tapering end的意思|示意
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带锥形端螺纹销
threaded pin with tapering end的网络常见释义
带锥头的螺纹销 ... threaded flange 螺纹联接法兰盘 threaded pin with tapering end 带锥头的螺纹销 threaded portion 套管的螺纹部 ...