The cause and rule of deformation of datum point are analysized by data of repetition. Finally, some useful conclusions and suggestions are also given.
根据复测数据分析了基准点的变形原因和规律，得出了一些有益的结论和建议。
This paper expounds in theory that, we may use the relative stability or their ratio caused by UNVARIABLE as the proportion of the point on datum, which accords with the demands for choice of datum.
本文从理论上阐明用不变量导出的相对稳定度函数或其比值作为点在基准中的份量是符合对基准选择之要求的。
Use to indicate a datum target area, line or point.
用于指示基准目标区域、线条或点。
Ground control point data is the essential datum for geometry processing in the photogrammetry.
地面控制点数据是航天航空图像摄影测量几何处理的必需数据。
In migration processing, we usually require that migration datum is horizontal and that zero point for migration should be on the ground surface on which shot point and receiving points lie.
在作偏移处理时，一般要求偏移基准面是水平的，且偏移的零点应在激发和接收的地表。
If the element being tested with a tolerance requirement is a contour line or surface, point the arrow and datum symbol to the contour line or surface, and keep it away from the dimension line.
当具有公差要求的被测要素为线或平面时，将指引线箭头和基准符号指在线或平面上，且必须与尺寸线错开。
To minimize the use of mechanical lifts, the library is arranged at the mid-point of the tower as the new datum centre for redistributing the movement patterns.
为了减少多余的上下楼，图书馆被设置在塔楼的中点，重新分配了行人流线。
A new detecting technique-correction technique for datum in submicron DSW is introduced from the basic point of view.
本文从最基本的角度出发，介绍了亚微米分步重复投影光刻机中的一项新的检测技术——基准校正技术。
The method includes locating a focal point (24) of a laser (12) relative to at least one reference datum (14) of a workspace (16), the focal point (24) being where the laser (12) produces machining.
该方法包括相对于工作空间(16)的至少一个参考基准面(14)定位激光器(12)的焦点(24)，所述焦点(24)位于所述激光器(12)进行加工的位置。
The method includes locating a focal point (24) of a laser (12) relative to at least one reference datum (14) of a workspace (16), the focal point (24) being where the laser (12) produces machining.
该方法包括相对于工作空间(16)的至少一个参考基准面(14)定位激光器(12)的焦点(24)，所述焦点(24)位于所述激光器(12)进行加工的位置。
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