2.2 数控机床坐标系2.2.1 坐标系及运动方向1．机床坐标轴（Coordinate Axes）的命名右手直角笛卡尔坐标系 2．机床坐标轴的确定方法 确定机床坐标轴时，一般是先确定Z轴，再确定X轴和Y轴。
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geocentric ecliptic coordinate axes 地心黄道座标轴 ; 地心黄道坐标轴
geocentric equatorial coordinate axes 地心赤道座标轴 ; 地心赤道坐标轴
rectangular coordinate axes 直角坐标轴
Machine Tool Coordinate Axes Validity 机床坐标轴常数设定
Cartesian coordinate axes 直角坐标系
geocentric coordinate axes 地心坐标系
coordinate axes for surface 表面的坐标轴
Set Position of Coordinate Axes 设置坐标轴位置
This finding is verified by the experiment.5. A method of measuring and identifying the lathe motion error is proposed, where the coordinate system is related with processing system and machining state, the identification of geometrical errors and motion errors of the machine tool is accomplished by calibrating the error distribution in the corresponding coordinate axes.
5．探讨了机床运动误差的测量与辨识方法，通过标定工艺系统坐标系相关坐标轴上的误差分布实现了对机床几何误差与运动误差的辨识，简化了对众多误差源的处理，较好地解决了加工空间法标定难和综合法数学表达相对复杂的问题，为具体机床加工精度的预测奠定了基础。
参考来源 - 虚拟数控车削加工精度预测系统研究·2,447,543篇论文数据，部分数据来源于NoteExpress
A simplified computing formula of moment of inertia of the coordinate axes is given as well in this paper.
并给出了对坐标轴的转动惯量的简化计算公式。
We have mentioned that independence of choice of coordinate axes is an important aspect of the law of physics.
与坐标轴选择无关，这一性质是物理学定律的一个重要方面。
It constructs a new set of orthogonal coordinate axes such that the projection of points onto them have maximum variance.
它首先生成一套新的正交坐标系，所以投影到坐标系的点都有最大差异。
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