查询词典 datum point

In this paper,on the basis of the the problems practically existing on the datum plane adopted in coastal engineering,we have proposed ...

本文根据海岸工程使用基准面存在的问题，提出了以黄海水均海平面为海岸工程的基准面并讨论了从旧有各基准面过渡到统一基准面的有关问题。

The element tree for a datum plane feature is documented in the header file ProDtmPnt.h , and has a fairly simple structure.

一个基准点特征的元素树被文档化在头文件 ProDtmPnt.h ，有个非常简单的结构。

Based on the comprehensive analysis of drill well, logging and seismic data, the various datum plane according to the ration of accommodation and sediment supply.

根据钻井、测井及地震资料的综合分析，以A/S值的变化趋势为依据，可以识别不同级次的基准面旋回。

An initial surface is determinated firstly, which is used as the datum plane to parameterize the discrete boundary points, and then an object function is established by the control points of B-spline surface.

它在车身造型，飞机制造和其他工业产品的设计中都有广泛的应用，如构建工业设计用的由复杂边界构成的曲面或是填补型心和型腔造型的零件中的孔洞等。

Datum plane including the plane, side, and face.

基准面包括平面，侧面和端面。

It shows that, apart from the usual elements for the tree root and feature type, a datum plane contains the positioning constraints and an optional fit type.

它展示了，除了通常的树根和特征类型等元素，一个基准平面包含位置约束和一个可选配合类型。

According to the definition of the minimum zone method, the mathematical model is presented for evaluating flatness error and establishing datum plane equation.

分析了常用的近似评定法(三点法、对角线法、最小二乘法等)存在的局限性，根据最小区域法的定义，给出了基准平面方程及平面度误差评定目标函数数学模型的建立方法，并举例说明了采用Matlab进行平面度误差的计算。

Furthermore, a new algorithm based on Fourier-transform technique combining with different calculations is proposed, which is suitable to measure steps. The new algorithm overcomes the disadvantages of old one needing datum reference and plane of reference, increasing this algorithm's utility.

基於傅里叶变换的波长移相算法，提出了结合差分运算的适合於台阶测量的新算法，克服了已有算法中需要参考基凖和参考面的缺点，提高了算法的实用性。

Snap lines can be assigned to a view, a datum plane or any geometry edge and then move with that view.

捕捉线能够被指定给一个视图，基准面和任何边线，并且，捕捉线会跟随视图移动。

In the planetary orbit more or less (is called ecliptic surface and take the revolution in the identical plane as datum).

行星轨道中或多或少在同一平面内（称为黄道面并以地球公转轨道面为基准）。

We are forbidden from giving money to these shoeless, skinny children, as this will perpetuate begging.

向光着脚，骨瘦如柴的孩子施舍是不可以的，因为要招来无休无止的乞讨。

It would be hard not to fall victim to some sharpeyed policeman.

要想不被某个目光锐利的警察抓到，谈何容易。