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Utilizing the expression of maximum deviatoric stress yield rule on π plance and the relationship betwen π plane and principal stress this paper deduces and examines the shape and position of maximum deviatoric stress yield rule on π plane and the relation to Mises circle and Tresca hexagon .

利用π平面与主应力空间的关系及最大偏应力屈服准则在π平面上的表达式，推导验证最大偏应力屈服准则在π平面上图形的形状、方位及其与Mises圆和纯拉伸Tresca六边形的关系。

Firstly, the paper introduced the working principle and device of the two-pass grate-rotary kiln and had an analysis method of mechanics of the tyre. We have put forward the finite element analysis of the contact stress of the tyre-roller based on the whole construction mode of shell-kiln liner-large gear-tyre-roller of the rotary kiln and obtained the strength and distributing rule of the tyre's contact stress. The research shows that within one week the contact stress mainly lies in two leading peak value and catastrophe which appear at the contact zone of the tyre and supporting roller. Then we regarded the tyre's stress as the test of unknown plane stress of principal stress. Utilizing mature and modern testing technology, we raised the testing principle and scheme of tyre stress and then had a on-the-spot test of the stress. Comparing the analysis result of the test with the one calculated from the finite element analysis, it proofed the rationality of finite element analysis method of integral modeling and the correctness of the contact stress result of the tyre and roller. Finally, for two-pass of similar rotary kilns, using the ANSYS APDL re-development technology, carried on the re-development about the overall finite element analytic method of thecontact stress of tyre-roller.

首先，本文介绍了2档回转窑的工作原理和装置，对滚圈的力学行为进行了分析，提出了基于筒体-滚圈-托轮的回转窑整体建模的有限元分析法，来对滚圈-托轮的接触应力进行有限元分析与计算，得到了滚圈接触应力的大小和分布规律，并求得滚圈外中内圈节点的主应力；其次，把滚圈的受力看成是主应力未知的平面应力的测试，利用现代测试技术，提出了滚圈主应力测试的原理和方案，并对滚圈的主应力进行了现场测试，现场测试分析结果与有限元分析计算出的主应力相比较，证明了整体法建模的有限元分析方法的合理性和滚圈-托轮接触应力结果的正确性；最后，利用ANSYS的APDL的二次开发技术，针对2档同类回转窑，就滚圈-托轮接触应力的整体有限元分析法进行了二次开发。

Meanwhile, for the characteristics of plant disease spot, segmentation model was created by utilizing the local correlated characteristic of Markov random field and linear stationary auto-regression model formed by Gauss distribution, and self-adaptive segmentation of plant disease spot was realized through optimizing the model with improved ant colony algorithm and maximum a posteriori probability estimation of Gauss-Markov random field.

同时，利用Markov随机场的局部相关特性并结合Causs分布组成线性平稳自回归模型，针对植物病斑特征建立分割模型。最后，采用改进型蚁群算法对其进行优化，并结合Gauss-Markov随机场最大后验概率估计，实现对植物病斑的自适应分割。

Utilizing probability proportional to size sampling method, the study sampled 500 faculty members at 51 universities in Taiwan.

针对台湾51所一般大学教师依多阶段抽样进行问卷调查，共发出500份，问卷回收338份，有效问卷335份，回收率66.4％。

Wang Hui, utilizing the shell of an old garage enhanced with new architectural concepts. Seen from the outside it is a huge silver cube; its inside comprises three exhibition halls with different sizes and a projection room. The entire space covers 800 sq.m.

它是一组老车库与新建筑的组合，空间外部呈现为一个完整的巨大银色立方体，内部依据功能，划分为3个不同大小、高低渐变的展厅及一个影像放映室，总面积为800平方米。

To solve the problem encountered in finding a proper rotation matrix and translation vector, approximate and precise solutions are provided successively. The approximate one has the advantage of utilizing existing solution, with limited range of weight to choose from. The precise one has no limit to weight, and can also prevent the problem of obtaining a mirror matrix of the correct one. Besides, it permits the'hat'to be amplified to fit the size of'head'.

其中近似解可以直接套用现成的公式计算，但是权重的选择余地不大，而精确解则无此限制，而且从理论上解决了不同权重下求解旋转矩阵和平移向量时，可能出现错误的旋转矩阵的问题，并允许在配准时对"帽"进行缩放以适应"头"和"帽"的大小不匹配的问题。

The prospection of exploiting and utilizing microbial polysaccharides and the problem that must be solved are pointed out.

展望了微生物多糖开发利用的前景并提出了亟待解决的问题。

This experiment was carried out to study the effect of fiber on growth performance, metabolic rate, digestive tract, meat quality and the change of microbes of intestine in geese of different breeds. The mechanism of utilizing crude fiber for geese was discussed. In this paper, the JL AU I, JLAUIII and JLAU cross geese twenty respective were selected as experimental animals, while Corn stalk and purple medic powder admixture were considered as fiber resource. The test was divided into two periods.

试验选取吉林农大Ⅰ系、Ⅲ系和杂交鹅各20只，以玉米秸和苜蓿混合粉作为日粮纤维源，通过饲养试验、代谢试验、屠宰试验、血清生化指标的测定、组织学观察以及微生物检测等研究了日粮纤维对不同品种鹅生长性能、养分代谢率、消化道、肉质及鹅肠道内微生物变化等的影响，探讨了鹅对日粮纤维利用的机理。

of this study was based on quantitative methodology, utilizing unstructured interview and purposive sampling.

研究方法是采用质性研究法，使用非结构性访谈及立意取样的方式。

of this study was based on quantitative methodology, utilizing semi-structured interview and purposive sampling.

研究采质性研究法，使用半结构性的访谈及立意取样的方式。

Now he worked in ajoint venture.

现在他在一家合资企业工作。

More troops in Afghanistan won't change any of the foregoing.

更多的在阿富汗的军队也不会改变之前的状况。