... counter inductor 记数感应器 counter sunk head 埋头 counterbalance "相互平衡,配重平衡" ...
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Counter-sunk head 埋头 ; 静心
counter sunk head rivet 埋头铆钉
counter sunk head bolt 埋头螺栓
flat counter-sunk head screw 平顶埋头螺钉
counter sunk oval head rivet 埋头凸顶铆钉
counter sunk flat head rivet 埋头平顶铆钉
half-counter-sunk rivet head 半埋头式铆钉头
counter sunk ovel head rievt 埋头凸顶铆钉
round head counter sunk rivet 埋头圆顶铆钉
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