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Based on the variational principle of virtual voltage and virtual displacement derived in this thesis and the classical theory of linear laminated plates, and by using the constitutive equations of elastic piezoelectric materials, and the DKQ quadrilateral plate bending element, the finite element modeling for the fabric reinforced laminated plates with nonlinear voltage-electric strain relationship of piezoelectric actuators has been established for the first time in this thesis. And the expressions for the electric loadings with obvious mechanical meaning and convenient for computation are established, which can be used to the deformation analysis of laminated plates with piezoelectric actuators under specified voltages.

以本文直接导出的压电结构的虚电势—虚位移变分原理为基础，依据经典线性层合板理论和压电弹性体的本构方程，采用基于离散法线假设的DKQ四结点任意四边形薄板弯曲单元，首次建立了考虑非线性电压—电应变关系的含压电致动器的纤维增强型层合板的有限元分析模型，并推导建立了力学意义明确、便于计算的电荷载表达式，可用于指定电压条件下纤维增强型叠层合成板的变形分析。

The analysis of the acided-fracturing effect by the transient well test prove to be not all the reservoir that has not the high producibility, the reservoir damage is the dominating factor of the affecting acided-fracturing effect, and that the acided-fracturing...

通过不稳定试井测试对酸化压裂效果的分析证明：并非所有地层都不具备高产能力；对一些原来渗透性小而没有伤害的地层进行酸化压裂也能取得一定的效果，但是对生产井产能的提高作用是很有限的；地层伤害是影响酸化压裂效果的主要因素。

This paper introduces the major equipment of the polysilicon reducing furnace electrical system ,and emphasizes the working prin-ciples of preheating voltage regulator and reducing voltage regulator.

介绍了多晶硅还原炉电气系统的主要设备，着重分析了预热调压器和还原调压器的工作原理，并且提出了一种新型的还原调压器设计思想，减少了谐波含量，提高了功率因数。

The coating on steel castings in EPS-V process should be not only of high strength and high refractoriness, but also of high permeability.

提出一种简单可靠的实型负压铸钢件涂料常温和高湿透气率测试方法，通过尺寸修正和温度修正，计算出负压实型涂料的透气率，并以此为手段，研制出一种高透气率的实型负压铸钢件涂料

The research is to analyse the stress, stain and displacement with Pro/Mechanica by repetitiously editing. Then producing, testing and assembling the samples. At last summarizing the research result for some related researchers' reference.

经过空间的配置与外型的修饰，本研究将压接钳以Pro/Mechanica 分析模组，作应力、应变及位移的力学分析，经过反覆的模拟及修改后，本研究亦将压接钳之原型制作，组装并测试压接功能，最后将研究成果作总结，以便未来相关研究者参考。

These two defects were suppressed when polyurethane elastic cushions and steel paddings were used between the titanium alloy retiary sheet and the press punch with the blankholder device in the forming technology mode, and the 3D curved surface of prosthesis with good quality can be acquired.

模拟结果表明：采用前两种成形工艺得到的钛合金颅骨修复体表面出现压痕或起皱缺陷，采用在基本体和钛合金网板之间放置聚氨酯弹性垫和钢质垫板并使用压边圈这种成形工艺时，可以抑制压痕和起皱的产生，获得良好的成形效果。

The anode structure of CI-LIGBT is optimized by numerical simulation, and it is pointed out that segmented p〓 anode region surrounded by n〓 anode region is the key to improve the ability of current limiting, and the more deeper the n〓 anode junction relative to the p〓 anode junction, the more powerful the ability of current limiting is. The affection of the breakdown voltage BV〓 of the reverse biased p〓n〓 junction and the sample resistance upon the latching current, the latching voltage and the on-state voltage have been studied, and it is indicated that the tradeoff between the on-state voltage and the latching characteristics is the excellentest when BV〓 is 1. 1V so that its on-state voltage can be just only 0.6V higher than conventional LIGBT. It is also found that this device is especially suit to high temperature environment. Based on X. B. Chen's surface voltage sustaining structure using optimized variational lateral doping and Ludikhuize's multiple floating rings structure, high voltage LIGBT and is studied in this paper.

通过数值模拟，优化了CI-LIGBT的阳极区结构，指出采用被n〓阳极区包围的单元状p〓阳极区是提高该器件限流能力的关键，而n〓阳极区结深相对p〓阳极区结深越大，器件的限流能力越强；分析了反偏p〓n〓结击穿电压BV〓和取样电阻对器件闩锁电压、闩锁电流和导通压降的影响，得出BV〓在1.1V时器件导通压降和抗闩锁能力间的折衷关系最优，其导通压降仅比普通LIGBT高0.6V；分析了温度对LIGBT闩锁性能的影响，表明CI-LIGBT即使在450K的高温下也不会闩锁，尤其适用于高温工作环境。

This paper designs the vibrating road roller with a special structure of dynamic balance.

本文设计了具有特殊动平衡结构的振动压实机，综合了振动压路机和冲击压路机的优势，既可以实现冲击压实的高压实度，又可以保证压实路面的平整度和均匀性。

Based upon analysis of the factors influencing the compaction quality of backfilled soil such as compaction work ,moisture content of soil and thickness of soil layers,two dry density inspection methods are introduced: ring simpler method and sand cone method,in order to ensure compaction quality of backfilled soil.

介绍了工程特点，对压实功、土的含水量和每层铺土厚度等影响回填土压实质量的因素进行了分析，并介绍了环刀法和灌砂法两种回填土干密度的检测方法，以确保回填土的压实质量。

This paper expounds the conception of the compactness, introduces some methods for detecting the field compactness such as the sand cone method, the cutting ring method, the nuclear magnetometer method, and the core-drilling method , etc.

阐述了压实度的概念，介绍了灌砂法、环刀法、核子仪法、钻芯法等现场压实度的检测方法，指明了各种检测方法适用范围、注意事项，为施工现场压实度的有效控制提供了借鉴。

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