Screw Case Back螺丝盒背面
screw-back拉杆;倒转
screw-back earring螺丝夹耳环
Screw Lock Back螺丝锁回
Screw earring back螺旋耳扣
screw up back tube套尾套
Screw back not reached螺杆后退未到位
Screw Back Wood Cap旋回木盖
screw back pressure螺杆返压