threading slot造句

例句与造句

1. Threaded core plugs and threaded slotted pipe plugs
   带螺纹芯形插塞和带螺纹的开槽的管插塞
2. Automatic thread slotting machine
   螺丝制造成型机械
3. It's difficult to find threading slot in a sentence. 用threading slot造句挺难的