countersunk oval head screw的意思|示意

美 / / 英 / /

埋头椭圆头螺钉

埋头圆顶螺钉 ... countersunk head screw 沉头螺钉; 埋头螺钉；“埋头螺丝”; 埋头铆钉 countersunk oval head screw 埋头圆顶螺钉 cro head screw-driver 十字头螺丝刀 ...