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For the selection of textiles for the forced layer of perssure suit,identification of fabrication technique,and adequate environment,the definite research conclusions are given,in order to ensure the development of forced layer of pressure suit and security d...

为压力服受力层织物的选择，加工制作工艺的确定及适宜使用环境等，给出了明确的研究结论，为保障压力服受力层的研制及加压时具有良好的安全性奠定了基础

Methods:clinical data of 23 cases of left-sided colonic carcinoma undergoing one-stage resection and primary anastomosis were analyzed respectively.intraoperative colonic lavage were performed in all cases.for the 14 cases which were considered to be dangerous,preventive ceostomy was performed.results:23 cases were performed one-stage resection and primary anastomosis,all patients had not any complications such as anastomatic leakage and infection of the peritoneal cavity.conclusions:have a strict control over operation indication,perform postoperative care properly, one-stage resection and primary anastomosis for acute obstruction of left hemicolonic carcinoma is safe and workable.

回顾性分析我院五年来23例左半结肠癌并急性梗阻一期切除吻合术的临床资料，所有病例均术中结肠灌洗，而认为有危险性的14例同时行预防性盲肠造瘘。结果：23例一期切除吻合术，无一例发生吻合口漏、腹腔感染等并发症。结论：严格掌握手术适应症，积极术前准备，充分结肠灌洗，对认为有危险性吻合口实行预防性盲肠造瘘，正确术后处理，左半结肠癌并急性梗阻一期切除吻合术是安全可行的。

Based on the analysis on primary wave frequency characteristics, some conclusions can be obtained: there were variations obviously for the characteristics of primary wave frequency spectrum in fracture zones, such as the dominant frequency shifted towards the low frequency, at this location the amplitude increased rapidly, and there were significant differences from the surrounding unbroken rocks.

通过对纵波频谱特征的分析得到这样的认识：对于断裂构造，纵波的频谱特征有着明显的变化，如纵波的主频位置向低频偏移，在低频位置上其幅度急剧地增大，与上下未破碎的岩层有着非常明显的差别。

This dissertation mainly discussed principal issues of the matrix converter such as realization and application. By the theoretical analysis, computer simulation and experimental investigation, some valuable experiences and significant conclusions were given, which found the technological basis for the matrix converters further practical studies.

本文的研究重点放在了矩阵变换器的应用方式的研究上，通过理论分析、计算机仿真和实验验证得出了一些有意义的经验和结论，为矩阵变换器进一步的实用化研究提供了一定的技术基础。

In this topic, the dynamic analysis methods for piezoelectric vibrator are studied systematically based on the theoretical model, FEM numerical experimentation and FEM governing equation for given compound-mode vibrator, and some valuable conclusions are obtained. The main work accomplished is summarized as follows: 1.Elaborate the main modeling methods for piezoelectric vibrator and the significance and necessity to study the dynamic characteristics of piezoelectric vibrator which emphasize the urgency of this paper. 2.Take the bending deformation induced by piezoelectric ceramic as example, the energy transfer mechanism of electric energy to mechanical energy are analyzed; the motion and force transfer mechanism are analyzed for the longitudinal-bending vibrator. 3.Based on mode assumption and Hamilton principle, the coupling model of piezoelectric vibrator of linear USM is built; moreover, the equivalent circuit model is obtained and a coupling equation represents the relation between electric parameters and mechanical parameters is derived which provides foundation to match the vibrator and driving circuit. 4.Combine the constitutive equation of piezoelectric ceramic with elastic-dynamical equation, geometric equation in force field and the Maxwell equation in electric field and the corresponding boundary condition equation, the FEM control equation for piezoelectric vibrator of USM to solve dynamic electro-mechanical coupling field is established by employing the principle of virtual displacement. The equation lays the foundation to study the non-linear constitutive equation of piezoelectric ceramic driven by high-power. 5.Define the dynamic indexes of characteristic of vibrator and carry out variable parameters simulation by calculating the model parameters and the electric characteristics of vibrator are simulated according to the equivalent circuit model. By numerical experimentation, the working mode of vibration of vibrator and the shock excitation results of the working frequency band which provides the mode frequency to realize bimodal are analyzed. Detailed calculation of the electro-mechanical coupling field parameters is made by programming the FEM control equation.

本课题从理论模型、有限元数值试验、有限元控制模型等方面以复合振动模式振子为例对超声电机压电振子的动力学特性及其分析方法进行了全面系统地研究，得出了许多有价值的结论，主要概括如下： 1、阐述了目前针对超声电机压电振子的主要建模方法，对压电振子动态特性的研究意义和必要性进行了论述，突出了本文研究内容的迫切性； 2、以压电陶瓷诱发弹性体发生弯曲变形为例，分析了压电陶瓷通过诱发应变来实现机电能量转换的机理；对基于纵弯模式的压电振子的运动及动力传递机理进行了分析； 3、基于模态假定，利用分析动力学的Hamilton原理，建立了面向直线超声电机压电振子的机电耦合动力学模型，并据此建立了压电振子的等效电路模型，导出了电参量与动力学特性参量的耦合方程，为压电振子与驱动电路的匹配提供了依据； 4、从压电陶瓷的本构方程出发，综合力场的弹性动力学方程、几何方程、电场的麦克斯韦方程以及相应的边界条件方程，采用虚位移原理，建立了压电振子动态问题机电耦合场求解的有限元控制方程，为研究其大功率驱动下的非线性本构模型奠定了基础； 5、界定压电振子的动力学特性指标，对压电振子的机电耦合动力学模型参数进行计算及变参数仿真；依据等效电路模型，对压电振子的电学特性进行了仿真分析；通过有限元数值实验，对压电振子工作模态附近的模态振型及工作频率附近的频段进行了激振效果分析，找出了实现模态简并的激振频率；利用有限元控制方程，通过编程计算，对压电振子的力电耦合场参数进行了详细计算，得出了一些有价值的结论。

Its value is decided by the scientific evidences and practical function of mental test conclusions, and its privative force should be determined by judges, for its admissibility of evidence.

心理测试结论的科学依据和现实作用决定了其证据价值，其在证据能力上具有许容性，其证明力应由法官自由心证。

By probing into new methods and theories, this study achieves new findings and conclusions.

对方法和理论的新尝试，为本研究带来了新发现。

The following conclusions are made in this paper. First, in the 3D FEA analyses of a tubesheet, neglecting the local influence of contact problem, the stress distribution of two models are similar.

本文得到如下结论：（1）对兼法兰形式的管板做三维有限元应力分析时，在忽略接触等问题的局部影响下，非线性模型和简化模型的应力计算结果相近。

According to the research, conclusions as follow:一、 The theories foundation of life curriculum should include Progressivism, Constructivism, Cognitive theory and Curriculum integration theory.

根据研究结果提出下列结论：一、生活课程之理论基础包括经验主义、建构主义、认知理论及课程统整。

Here ,we know two conclusions. one is that our outer world is a projective world .

这里可以看出两点：第一、我们之所以能看见，能听见，是借助于感官的工具效能得以实现的。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐