... rock and coal perforater 石岩煤层打眼机 rock arm shaft 摇臂轴 rock bit for water well drilling rig 取水井机凿岩钻头 ...
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Further more it also investigates the influence of the stiffness of CAM shaft and rock arm supporter and the high order frequency of CAM profile on the dynamic response of valve system.
同时考虑了气门初始间隙以及由此产生的冲击现象，并研究了凸轮轴刚度、摇臂支座刚度及凸轮升程高阶频率对气门运动规律的影响。
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