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The theoretical basis for test of structural properties and delamination decision in engineering applications of composite structures is provided.

在应用上为工程中复合材料结构的结构性能测试及内部脱层的确〓提供理论依据。

The delamination would inevitably affect the mechanical behavior and dynamical properties of laminated structures to some extent.

由于脱层的存在，必然对层合材料的受力性能和动力特性产生一定的影响。

Thus investigating the influence of the delamination on natural frequencies of laminated structures will be useful to non-destructive testing method.

因此，研究脱层对层合材料构件固有频率的影响，将对构件的无损检测提供必要的依据。

The combinatorial and delimitative algorithm can be used to solve the problem. A software called "Power Discrete" to implement this algorithm is developed by using Microsoft Visual6.0. It is a useful tool for linear programming problem with discrete variables and for discrete optimum design of structures, and in addition, the software also includes other algorithms such as genetic algorithm.

在国际上， 20世纪 60年代末期和 70年代初期，研究人员已开始对工程离散变量优化设计问题进行研究，但由于当时对于连续变量的非线性规划问题的研究还不够深入，所以在 70年代和80年代，研究的重点集中于连续变量的非线性规划问题。

In cases of seere demineralization of the bony calarium, superisualization of intracranial structures may be noted.

在胎头的两个轴向切面所见的颅内结构"超清晰显示"，这是在成骨不全中因骨化不足所致。

Only the problem is, if you demolish the old structures, you don't have anything from your ancestors.

唯一的问题是，如果你拆除旧的建筑物，你就没有拥有你祖先的任何东西。105。

A great number of experiments are conducted in demountable vacuum chamber with various electrode structures. And the peak value of applied current varies from 1kA to 30kA.

本文在可拆卸式灭弧室中对所设计的各种触头进行了大量的实验，实验电流的峰值为1kA至30kA。

Therefore it is obvious that in a country of such a dense population and seismic activity proper design of earthquake resistant structures is the main issue in building.

因此，对于中国这个人口密集、地震活动频繁的国家来说，建筑物的抗震结构设计无疑将成为一个重大的问题。

More and more underground structures are built in the densely built areas.

更多的地下构筑物建造在建筑物密集的地区。

The types, distribution and density of secretory structures are different among different organs and plants of this genus.

该属不同植物和不同器官中的分泌结构的类型、分布和密度存在差异。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。