... fixed pitch air screw 固定螺距螺旋桨 pitch of screw thread 螺距 controllable pitch screw 可调螺距螺旋桨 ...
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A type of screw and nut with coarse pitch was applied to realize thread core demoulding automatically.
采用螺距粗的螺丝和螺母实现螺纹型芯自动脱模。
Compression cancellous bone screw with both ends thread is a Variable pitch screw designed tO provide rigid 'fixation of cancellous bone fracture.
双端螺纹松质骨加压螺钉的特点是两端螺纹具有不同的螺距，无螺帽。
The influence of coverage due to the radius, angular velocity, pitch , double thread of plastic screw, and rotational mode of steel axis are also discussed in here.
文中并探讨了塑胶导螺杆半径、转速、螺距、双螺纹与钢轴旋转模式对钢珠表面检测覆盖率影响。
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