查询词典 theorem of principal axes

Two series of drained tests with fixed principal stress axes and cyclic rotation of principal stress axes were conducted with a hollow cylinder apparatus at Hong Kong University of Science and Technology.

采用香港科技大学的空心圆柱扭剪仪进行了应力主轴固定单调剪切和应力主轴循环旋转两种不同路径的排水试验。

A new cyclic constitutive model for sands which can describe the deformation behavior of sands under combined variation of principal stress axes and magnitudes was developed based on the above physical fundamentals. And its effectiveness under the complex stress paths including cyclic rotation of principal stress axes is verified by a good comparison of model simulation with test results for sands.

2基于对应力主轴循环旋转条件下砂土的基本变形规律的认识，吸收和借鉴已有弹塑性本构模型研究成果中的合理概念和建模方法，建立了一个可合理描述应力主轴循环旋转效应及主应力幅值大小与应力主轴方向循环耦变效应的砂土弹塑性本构模型，并对该模型在包含应力主轴旋转的复杂循环应力路径下的有效性进行了验证。

This kind of projection is principally used in delineating buildings or machinery, in which the principal lines are parallel to three rectangular axes, and the principal planes are parallel to three rectangular planes passing through the three axes.

这样的投影主要用在画建筑物或机器的轮廓上。

Finally, this dissertation offers suggestions to improve middle school principals\' leadership respectively from the three perspectives of profession, system and subject on the basis of issue investigation and root causes analysis. From the perspective of major, we should place the professional role of school principal on educational leader, and educational leadership is the core professional standard for principals. From the perspective of system, the professional standards and qualification system of the principals should be set up in the pre-entry period, and we should reform the principal\'s selection mechanism and perfect the principal occupation term system in the entry period. we should perfect the systems of duty, training, evaluation and motivation etc.. we should set up healthy work termination system in the principal retirement period. From the perspective of subject, school principals should accurately grasp the meaning of leadership to upgrade the level of education al leadership at multi-levels and in multi paths. Administrators should strive to improve the educational leadership level to realize the professionalization of educational administration, Researchers and trainers should really become the supporters of the principal professional development and leaders of leadership practice improvement.

最后，本文针对调查的问题发现与根源剖析，分别从专业、制度、主体等三个视角提出改进中学校长领导力的对策建议：专业上——应将校长领导力的专业角色定位于教育领导者，教育领导力是校长专业标准的内核所在；制度上——拟入职环节应建立校长专业标准和健全校长资格制度，入职环节应改革校长选拔机制和完善校长任期制度，在职环节应健全校长职责、培训、评估、激励等制度，退职环节应建立健康的校长退出机制；主体上——校长应准确把握领导力内涵、多层次、多途径提升教育领导力水平，教育行政人员应努力提高教育领导水平、逐步实现教育行政专业化，研训者应真正成为校长专业发展的支持者、领导实践改进的引领者。

In order to benefit from this new technique without any dangers, on the basis of the arguable contents, the paper put forward a series of principals with the knowledge of systematical philosophy, mathematics and ecological . agriculture: welfare principal, invariable principal of gene, non-spread principal of gene, equal principal of substance and informed perfectible principal.

为了从这种新技术成果中获得好处，同时又不会带来风险，本文以争论的内容为基础，从转基因作物能比传统农作物带来更多的社会效益的角度出发，运用系统哲学、生态农业和数学的一些知识，提出了转基因作物研究和推广中遵循的一系列原则：福利原则、基因稳定性原则、基因不扩散原则、实质等同性原则、以及知情选择原则，并进而建立起评价具体的转基因作物的社会效益的模型。

The measurement results show that the general characteristics of the present crustal stress field of the project area are as follows: the horizontal principal stress is the maximum principal stress, and the preferred orientation of the maximum horizontal principal stress is NW-WNW, the maximum principal stress of surrounding rocks of the plant buildings and high-pressure branch tunnel area is generally 14.5±0.5 MPa and the minimum principal stress is 9±0.5 MPa; the dead oad-bearing capacity of surrounding rocks is 10—14 MPa; and the surrounding rocks are essentially impermeable at high pressures of 8—10 MPa.

测量结果表明，工程区现今地壳应力场的总体特征为：水平主应力为最大主应力，最大水平主应力的优势方向为NW-NWW向；厂房和高压岔管区围岩的最大主应力值一般为14.5±0.5MPa，最小主应力值一般为9±0.5MPa；围岩自身的抗载强度一般为10～14MPa；在8～10MPa高压力作用下围岩基本不透水。

RESULTS: The self-prepared 3-D external distractor was 30 g. The lengthener was built to provide 3-D suture expansion osteogenesis by changing the direction. The expansion bar could be moved about 2 cm in anteroposterior axes, 3.5 cm in perpendicular axes, 3 cm in coronal axes.

结果：自行研制的三维缝牵张器重量30 g，牵张杆前后向移动2 cm左右，上下方向移动3.5 cm左右，向外移动3 cm左右，牵张控制准确，三维变向简便易行。

Rotating around one axis does not reorient the other axes, and you can end up in a situation where two axes cancel eachother out, making it look as if one of the rotation axes is \"broken\".

绕着一个轴旋转不能够再适应其它的轴，你可以在一个位置停止，在那里两个轴相互抵消掉了，那看起来就好像其中一个个轴断了一样。

The ordinary edge detection methods such as Sobel and Canny operators are immune to noise, which result in cophasal axes discontinuity due to lack of edge information caused by noise. In order to extract cophasal axes more continuous and immune to noise, a novel approach is developed based on edge detection. Firstly, the median filter and improved Sobel method are used to preprocess seismic section images. Secondly, the threshold value is determined automatically based on variance to detect abnormal information. Finally, the complete cophasal axes are extracted after a post-processing.

由于边缘检测中常用的Sobel算子和Canny算子检测同相轴时对噪声免疫差，常因噪声因素引起边缘信息缺失导致同相轴提取不连续，本文采用中值滤波并对Sobel算子进行改进，对地震剖面图进行预处理，结合均方差自动确定阈值并进行异常检测，提取完整同相轴。

From the existing archaeological discoveries, we can see that in the Paleolithic Age, there have been a tip-shaped stones, stone balls, stone hand axes, bone spears. Until the end of the Neolithic Age, there appeared a large number of stone axes, stone shovels, stone knives and bone harpoons, arrowheads, and even copper tomahawks, copper axes and so on.

从现有的考古发现中我们可以看到，在旧石器时代，已出现了尖状石器、石球、石手斧、骨角加工的矛，而到了新石器时代末期，则出现了大量的石斧、石铲、石刀和骨制的鱼叉、箭镞，甚至还有铜钺、铜斧等。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。