cutting the screw thread
American standard screw thread
screw thread
螺纹节距
螺纹联结
螺纹副
螺丝牙
螺旋机构
螺柱
螺纹
数控编程
跨线测量
single-line regular screw thread
technology of straight screw thread joint
unified miniature screw thread
Trial cutting method for cutting machining