So CP was worthy of being called the Spread Center in New Culture Moveme.
在这个意义上讲，商务印书馆是当之无愧的新文化运动传播中心。
To solve this problem, The author analyzes the reasons why the errors are generated in turning (boring) and designs the special machine, in which the rotation of part is main moveme.
为了解决这个问题 ，作者分析了车削 （镗削 ）加工台阶孔时 ，误差产生的原因 ； 并设计了车削该台阶孔的专用机床 ：工件的旋转作为主运动 ，两把车刀从两端进给运动 ，分别车削两段台阶孔。
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