Perpendicularity - is the condition of a surface, axis, or line, which is 90 deg. From a datum plane or a datum axis.
垂直度-条件是表面，轴，或线，这是90度的基准平面或基准轴。
With the idea of the datum plane linking the two shops at a higher level, the shops are actually conceived as separate and independent entities on the ground.
基准面在更高的层层连接这两个商店的概念，而在地上作为单独的实体商店。
Currently available vernier depth gauges are simple in measuring function, especially in measuring precisely the no touchable directly depth of the measuring datum plane.
现有游标深度尺的功能单一，对测量基准面无法直接触碰的深度尺寸难以精确测量。
In order to improve the manufacturing technology of rotary milling jigs, a datum plane was added so as to raise the manufacturing precision and reliability.
原回转铣夹具制造精度较低，现在增加一处工艺基准面，大大提高了它的制造精度和可靠性，并为夹具的使用提供了一处校对基准面，使得叶片型面铣加工更为可靠。
It introduces the perspective system feature in different positions between tableau and datum plane inclination.
研究了画面与基面处于不同位置时的透视体系特征。
If the element being tested with tolerance requirements is an axis, centre line or symmetrical plane, the arrow and datum symbol should be aligned to the dimension line of that element.
当被测要素为轴线、中心线或对称平面时，指引线的箭头和基准符号应与该要素的尺寸线对齐。
The present paper deals with the errors existent in routine datum plane statics under the condition of complex topography as well as the cause for the errors.
本文从理论上论述了复杂地形条件下常规基准面静校正和存在的误差以及存在误差的主要原因。
The datum plane of system is made certain and its veracity is proven by experiment.
确立了检测系统的基准，并就系统基准的准确性进行了验证实验。
The article presents the application of technique datum hole in designing special clamps for drilling diagonal bore and finishing inclined plane, and raises calculation analysis.
论述加工斜面、斜孔零件时工艺基准孔在夹具设计时的应用，并提出了计算分析。
However, similar characteristics of deep karst below the present drainage datum plane are less studied up to now.
现代排泄基准面以下深岩溶的类似特征则至今研究尚少。
With the rise and fall of datum plane, sedimentary centre of sand stone moved towards sediments source or basin.
并且随基准面上升和下降，砂岩沉积中心分别向物源和盆地方向迁移。
Select planar surface or datum plane.
任意选择一个平面。
In this paper, the geometric characteristics of worm drive with double enveloping arc surface machined by datum-plane tool are stated.
本文阐述了平面二次包络弧面蜗杆传动的几何特征，引用数学方程对这些特征加以说明，进而提出了啮合参数选择原则。
Gearboxes shall be taken as the standard unit. To adjust bottom base by referring to horizontal subdivision section of gear box, box body processing datum plane or support of bottom base;
compressors 齿轮箱为基准机，进行底座调整时以齿轮箱水平剖分面、箱体机加工基准面或 底座支承为基准，同时兼顾压缩机和电动机侧水平仪。
It is concluded that the accumulative bauxite zoning resulted from the of the landform dynamic equilibrium caused by the action of the primary bauxite datum plane.
探讨了堆积型铝土矿分带的形成机制，是原生矿层导致地貌动力平衡变化的结果。
It is concluded that the accumulative bauxite zoning resulted from the of the landform dynamic equilibrium caused by the action of the primary bauxite datum plane.
探讨了堆积型铝土矿分带的形成机制，是原生矿层导致地貌动力平衡变化的结果。
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