结构单元

On the basis of unit sensitivity analysis,a statictopological parametric synthetic optimization method of the frame structure of car body has been put forward.

在单元灵敏度分析的基础上，提出汽车车身框架结构的静态拓扑参数综合优化方法。

The author presents the auto-generation mesh super-elements models of pentahedron and tetrahedron. The computer program for auto-generation of FEM mesh developed by the author can be used to mesh generation of every kind of block structure.

由于作者提出了五面体和四面体超单元自动生成网格的模式，使得所编制的自动剖分程序适用于各种块体结构的网格离散。

And combining finite element method and periodic boundary conditions,this article has provided the solution process for asymptotic homogenization equation and the predicting effective mechanics properties method in engineering.

本文利用渐进均匀化理论，详细叙述了求解具有周期性细观单元结构的复合材料有效力学性能的方法，并结合有限元理论和周期性边界条件，给出了求解渐进均匀化方程的过程，为实际工程问题提供了预测材料力学性能的方法。

Red light-emitting polymer TPA-CNPPV was synthesized by alternatively introducing TPA and dicyano-substituted phenylene into the main chain.

通过将三苯胺与苯环上被对二氰基取代的PPV单元共聚，利用电子给体与电子受体交替的结构得到了发红光的聚合物TPA-CNPPV。

The finite element models of two types of machine guns are set up, mainly based on the 3-dimensional beam elements, partly based on boundary elements. Modal experiment plan of the machine guns is designed and their modal analysis experiments are done. The inherent properties of structural vibration and dynamic response properties for type-02 14.5 mm anti-aircraft machine gun and type-89 12.7mm machine guns are completely realized through the method combining theory and experiment, and many valuable conclusions are obtained.

建立了以三维梁单元为主，边界元为辅的高射机枪和重机枪有限元模型，设计了模态试验方案并进行了两支枪的试验模态分析，采用理论与实验相结合的分析方法，全面揭示了 02 式 14.5mm 单管高射机枪和 89 式 12.7mm 重机枪的结构振动固有特性和动力响应特性，获得了许多有价值的结论。

In this paper, theory of homogenization was introduced into the calculation of plasterboard filled with concrete and Representative Volume Element model of plasterboard filled with concrete was established.

本文将均质化理论引入灌芯混凝土石膏板的计算，建立了灌芯混凝土石膏板的代表性体积单元模型，应用有限元分析程序ANSYS对此RVE模型进行模拟，获得其等效弹性常数，为结构的有限元计算提供了有效途经。

"Both primary and mating ring are made of solid-block construction for greater reliability and longer service life compared to the soldered, welded or sprayed hard-face designs used by other manufacturers."

与其他制造商所采用的低温焊接、熔焊或喷射硬面设计相比，主密封环和配套密封环均采用固体单元结构，可靠性更高，使用寿命更长。

"Both primary and mating ring are made of solid-block construction for greater reliability and longer service life compared to the solder ed, welded or sprayed hard-face designs used by other manufacturers."

与其他制造商所采用的低温焊接、熔焊或喷射硬面设计相比，主密封环和配套密封环均采用固体单元结构，可靠性更高，使用寿命更长。

"Both primary and mating ring are made of solid-block construction for greater reliability and longer service life compared to the soldered, welded or spray ed hard-face designs used by other manufacturers."

与其他制造商所采用的低温焊接、熔焊或喷射硬面设计相比，主密封环和配套密封环均采用固体单元结构，可靠性更高，使用寿命更长。

Both primary and mating ring are made of solid-block construction for greater reliability and longer service life compared to the soldered, welded or sprayed hard-face designs used by other manufacturers.

与其他制造商所采用的低温焊接、熔焊或喷射硬面设计相比，主密封环和配套密封环均采用固体单元结构，可靠性更高，使用寿命更长。属类：-〖水泵

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。