post screw insert的意思|示意

螺纹套筒埋值 ... piston活塞 plsitive mold挤压式模具 post screw insert螺纹套筒埋值 (责任编辑：熙涵) ...

罗纹套筒埋值 ... pierce剪内边 post screw insert罗纹套筒埋值 dome凸圆 ...

罗握棺筒埋值 ... welding mark溶开痕 post screw insert罗握棺筒埋值 immolation tapping screw自攻螺丝 ...