空间直线度误差
spatial straightness error
直线度误差的修正
straightness error corrected
直线度误差分离技术
roundness error separation
不垂直度误差
Non-perpendicularity between horizontal axis and vertical axis
Non-perpendicularity between horizontal axis and v
等误差直线逼近
Equal-error linear approaching method
equal error straight line approach
等误差直线逼近法
equal error beeline approaching method
3级直线差动机构
three-level straight line differential mechanism
垂直误差
Vertical difference
Error of perpendidicularity
perpendicular error
vertical error
二维直线度测量
Two-dimensional straightness measurement
二自由度直线运动
linear motion with two D O F
非接触式直线度测量
un-contact straightness measuring
钢管直线度
straightness of steel pipe