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1)  quasi-principal axes
拟主轴法
1.
A quasi-principal axis frame means a unit orthogonal frame in which the shear strains are small, As an extension of Hill s principal axis method, ireestablish the approximate representations for various strains, the finite rotation tensor, spins, strain rates, conjugate stresses and their rates with respect to quasi-principal axes.
发展拟主轴法的目的,是试图既保留主轴法的主要优点,又可作为某种分析大变形问题的高效数值示析方法的基础。
2)  spindle system controlled by analog quantity
模拟主轴
1.
With CNC tool′s spindle system controlled by analog quantity as an object of the study,this paper analyzes its hardware connection,control principle and process.
以数控机床模拟量主轴系统为研究对象,分析了其系统硬件连接、控制原理和过程,并在此基础上,提出了实现系统故障设定的硬件连接方案,实现了对系统各种常见故障的预设,从而使得用户可以了解数控机床在不同类型的主轴系统故障发生时的反应,这对于用户更好地理解数控机床模拟主轴系统的控制原理,积累数控机床故障诊断经验有着重要的意义。
3)  principal axes method
主轴法
4)  Cross-weighted moment algorithm
主轴矩法
1.
Cross-weighted moment algorithm is used to calculate the horizontal translation measure, vertical translation measure and vertical measure of two initial images which are used as the initial registration parameters.
本文采用主轴矩法计算两幅原始图像的水平平移量、垂直平移量和旋转量,然后设定初始配准参数,将此初始配准参数作为局部搜索法的初始参数。
5)  moment and principal axes method
矩和主轴法
1.
This paper firstly presents a classification of medical image registration methods in terms of seven standards, then summarizes some major registration methods from three aspects, such as moment and principal axes method, mutual information, and correlation method etc.
依据7个标准对医学图像配准方法进行了分类,然后从3个方面综述了目前的一些主要的医学图像配准方法,如矩和主轴法、互信息法和相关法等。
6)  principal axes and centroid based method
主轴质心法
1.
From the development of medical image registration method through the world,we find that principal axes and centroid based method has many good points to coarse match in combine registration method.
根据当前国内外医学图像配准技术的发展现状,发现主轴质心法作为混合配准算法中的粗匹配算法,具有速度快、鲁棒性相对较高,易实现等优点。
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