薄板

Based on structural design criterion of floodgates, a finite clement method is adopted to analyze and calculate deep-hole gate chamber. And based on space plank analysis theory, area stress is considered in the stress calculation of original laminose problems. The method is simple, convenient and manageable and reaches better precision.

本文在设计规范的基础上针对水闸的结构设计，采用有限元对深孔闸的闸室进行了分析计算，根据空间板的分析理论，在原薄板问题的受力计算基础上考虑了闸内力的作用。

The establishment of environmental protection form a complete set that annulus seams wash equipment is project of converter of 3 million tons of laminose projects of new steel company, the technical staff that responsible equipment installs introduces, equipment diameter 5 meters, 21 meters tall......

环缝洗涤设备是新钢公司300万吨薄板工程转炉项目的环保配套设施，负责设备安装的技术人员介绍，设备直径5米，高21米，重86吨，。。。。。。

Although Lenard at first followed Hertz in believing that the cathode rays were propagated in the ether, he later abandoned this view as a result of the work of Jean Perrin in 1895, Sir J.J.

赫兹因此建议可以用铝薄板将放电管内的空间一分为二，在空间的一部分内，阴极射线由常规的方法产生，而在空间的另一部分，可以在真空的条件下观察阴极射线。

Finite Element software MPI is used for the numerical simulation of microcellular foam injection molding process.

以注射矩形薄板制品的聚合物熔体充模流动过程和泡孔长大为研究对象，把微观两相流看成宏观单相流，采用泡孔单元模型并根据流体力学基本方程建立了泡孔长大的数学模型，使用有限元软件MPI对微孔发泡注射成型工艺进行了数值模拟

Based on the wave equation in the acoustic fluid space and the theory of thin-wall structure, the uncoupling error in low frequency range about the nonsymmetrical coupled structure-acoustic analysis equation is studied.

该对称模型特征值的非负性及特征问题的可降阶性也在本文中进行了深入研究，同时指出了在复模态分析中应当注意的问题；（2）由声空间波动方程和薄板理论出发，对非对称声振耦合方程的低频解耦误差问题进行了研究。

The bending problem of simple-supported parallelogrammic plates on Winkler foundation is reduced to two simultaneous Fredholm integral equations of the second kind by applying Green quasifunction method. The Green quasifunction is set up by using the fundamental solution of Poisson equation and the normalized boundary equation.

应用准格林函数方法，即利用方程的基本解和规范化的边界方程构造一个准格林函数，将Winkler地基上简支平行四边形薄板的弯曲问题化为两个耦合的第二类Fredholm积分方程，此积分方程的核表示式在区域的边界上具有奇异性。

The author introduces the character of low melting point alloy and its applications in sheet metal forming, discusses the choice of the patternmaking material, contrasts the two mould-casting technologies, points out the issues in design of technology and mold, and taking the representative large sheet metal forming for example, specifies the compose and character of the die structure.

简要介绍了低熔点合金模具的特点及其在板料冲压工艺中的应用，对比介绍了两种铸模工艺，指出了工艺及模具设计时应注意的问题，并以典型大型薄板拉深成形模具为例，详细论述了低熔点合金冲压模具的组成及结构特点。

The idea of this method is clarified by taking a vibration problem of simply-supported thin polygonic plate.

以简支多边形薄板的振动问题为例，详细阐明了准格林函数方法的思想。

The idea of this method is clarified by taking vibration problem of simply-supported thin polygonic plate on Winkler foundation.

以Winkler地基上简支多边形薄板振动问题为例，阐明了准格林函数方法的思想。

The bi-harmonic equation of simply supported thin polygonic plates is decomposed into Poisson's equations.

简支多边形薄板双调和定解问题可分解为二个互不耦合的Poison方程的定解问题。

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