垂直度误差 meaning in Chinese

error of perpendicularity

To improve the volumetric accuracy of machine tools , it is necessary that squareness and straightness errors of machine tools are measured , compensated and calibrated
摘要为了改善机床的几何精度，达到高精度的三维空间定位，必须对它的垂直度误差与直线度误差进行测量与校正。
By using the method of error analysis of mbs , the identification equation of geometric error parameters is derived and according to the condition that the rank of coefficient matrix of error measurement equation group must be full , we can get 18 terms geometric error of 3 - axis nc machine tools and three displacement error and three position error
应用误差辨识软件，解得各测量点的十八个误差参数，即每个运动方向的三个位移误差和三个位置误差，再根据实际情况获得三项垂直度误差，得到了所有的21项误差。