Analysis of non - verticality of the center line of cylinder with the center line of bearing of crank shaft 气缸中心线与曲轴轴承中心线垂直度的分析
Driving wheel 10 is closer to center line than idler roller with great positive pressure , the driving is stable 离中心线近，受正压力大，传动时更不易打滑。
The center line of shield segment lining has a certain deviation from the center line of alignment on a curve section 摘要盾构管片中线在曲线上与线路中线与有一定的偏差。
1 when flanges are integral with fittings or valves , holes for bolts are drilled to straddle the center line 1如果法兰与连接件或阀门构成一个整体，则螺栓孔钻在圆心线两侧。
When need to install two respiration valves , the two valves should be symmetrical distributed with the center line of the tank 当需要安装两个呼吸阀时两阀应以罐中心线对称分布。
Axial limitation of the slevve movement by means of a patented thrust system located in the center line of each gearing 采用位于每套齿轮中心线的专利推力系统对轴套的位移进行轴向限制。
Only when two elements have the same symmetrical center lines or axes , can they be drawn half divided by center line 仅当两个要素具有公共对称中心线或轴线时，可以各画一半，并以中心线分界。
