地理和投影坐标系都包含对地球形状的假设(一个略扁的球体)；这称为大地基准点。
Both geographic and projected coordinate systems include a definition of the assumed shape of the earth (a flattened sphere); this is called the geodetic datum.
起始：也叫做公共起始，有时也叫做基准模型，这是并行开发模型可以追溯的宗系关系中最近的一个起始。
Ancestor: Also called the common ancestor and sometimes called the base model, which is the closest or nearest ancestor from which the lineage of the parallel changed models can be traced.
介绍了地壳垂直运动的均衡理论，基于全球通量均衡基准，建立了任意坐标系下描述地壳垂直运动的动力学模型。
The isostatic theory of crust vertical movement is introduced. On the basis of the flux isostatic datum, a dynamical model, by which the crust vertical movement can be described is established.
根据特征元素树创建了基准面和基准坐标系，使我们很方便的在需要参照基准的时候来选取它。
According to feather element tree, the base level and base coordinate system are created, then we can choose them when we need them at any time.
介绍压力容器上实体元素的测量，测量坐标系的建立与转换，以设计基准评定制造精度。
Introducing method of measuring the points on the pressure vessel, establishing and transforming coordinate systems, estimating accuracy of manufacture with design standard.
高速精密钻孔主轴和钉销气缸系同基准轴线上工作，能保证工作精度高，操作方便。
The high speed drilling shaft and pin cylinder system work at the same reference axis to ensure high work precision and convent operation.
机器人视觉仪器由于机械安装引起的光学坐标系与机械基准坐标系之间的微小的角度误差可以通过高精度标定修正。
The micro Angle error between optical coordinate and mechanical datum coordinate of robot vision instrument due to mechanical assembly can be corrected by high accuracy calibration.
总结了波叠加的方法，指出了基准坐标系的重要性与有关量的求解方法。
The superimposing method of waves is given. The significance reference coordinate system and the solving process for some quantities are indicated.
信息对准的任务就是确定这两个坐标系之间的相对关系，进而把所有的信息转换到一个共同的坐标基准之下。
Coordinate alignment is the process to determine the relative relations of these two coordinate systems, then convert all the information into a common one.
通过适当手段，在同一基准之上比较常规乙烯塔系和热泵乙烯塔系的能耗差距。
Comparison is done for energy consumption between conventional ethylene tower system and heat pump ethylene tower system on the same basis through proper ways.
边系组合夹具是以基础件侧边作组装基准的柔性工装体系。
The design of modular fixture with side fastening is a flexible combination system for the fixtures with the side joint of fundamental elements.
边系组合夹具是以基础件侧边作组装基准的柔性工装体系。
The design of modular fixture with side fastening is a flexible combination system for the fixtures with the side joint of fundamental elements.
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