实际性

The paper combined with the course of educational electroacoustic system experiment teaching innovation,discussed the objective of innovation,how to add comprehensive and designed experiments,how to apply modern educational technology instruments,and how to change teaching methods and examining ways.

通过结合&教育电声系统&实验教学改革的实际，对实验教学改革的目标和在改革中所进行的综合性、设计性实验的增加、现代教育技术手段的应用、教学方法和考核方式的变革进行初步探讨。

The method we used in porosity and fractural parameters calculation has coincide well with practice.

系统分析研究区及其邻区火山岩测井响应特征，首次提出了基于交会图和多元统计方法的神经网络岩性识别技术，在解决复杂岩性地层的岩性识别中取得了很好的效果，提高了井孔岩性剖面解释精度，岩性解释符合率大于80％；运用多种参数评价火山岩裂缝—孔隙性储层，提出的计算孔隙度和裂缝参数的方法在实际应用中取得较好的效果。

According to plasticity of porous and dense materials, an evolution model of dimensions and relative density for cylindrical canned powders during hipping was first established and the criterion for uniform compaction under the same conditions was derived. The above results can serve as a guidance for determining the can dimensions in practice.

根据孔隙性材料和致密材料的塑性理论，本文首次建立了圆柱形包套粉末体在热等静压过程中几何尺寸及相对密度的演化模型，提出了圆柱形包套粉末体均匀收缩的临界判据，对实际生产中合理确定包套尺寸具有指导作用。

At a moment like this, in which, with the excuse of the actual economic crisis, the exploitation and the assault to the rights of the workers, in order to pursue with the accumulation of scandalous profits by economic groups, the Portuguese Communist Party challenged Humorgrafe to collaborate in some journeys of reflection with the participation of cartoonists from all around the world and from different political and ideological choices to, from their own philosophical and humoristic thoughts, contribute to this initiative - Exploitation and workers' rights through a humoristic line, with their artistic works about the important questions that at this moment, affect millions of Portuguese and worldwide workers: the unemployment, the low wages and the precarious job.

在片刻喜欢此，与实际经济危机、开发和攻击借口在工作者右边，为了追求以诽谤性的赢利储积由经济集团，葡萄牙共产党向Humorgrafe挑战在反射有些旅途合作与漫画家参与从所有世界和从不同的政治和思想选择，从他们自己的哲学和滑稽想法，对这主动性贡献-开发和工作者'权利通过一条滑稽线，与他们艺术性的工作关于重要问题在这片刻，影响成千上万葡萄牙和全世界工作者：失业、低薪水和飘摇的工作。

Methods: On single-plane and biplane DSA images (including cases with normal ventricular wall motion,hypokinesia and insufficient mixing of contrast medium in ventricular cavity) the area-length method and videodensitometry method were used to calculate the volume and EF respectively.

结果：双向造影的长度-面积法EF测量值与实际值无显著性差异(P＞0.05)；单向造影的测量值在局部室壁运动减弱时差异显著(P＜0.01)；视频密度测量法在室腔内造影剂混合不均时测量值有显著差异(P＜0.01)。

A simple artificial immune network algorithm, suitable for clustering problems with a small quantity of samples, is obtained by using the idiotype immune network. Further, a fuzzy immune network classification algorithm applied to sample classification learning is proposed by uniting the algorithm and fuzzy logical rules.

其次，利用抗原群及抗体群的作用关系，结合免疫记忆细胞的记忆功能，并借助于克隆选择原理、免疫网络的调节机制及约束条件处理方法，设计约束多目标优化免疫算法处理约束多目标优化问题，收敛性论证、性能测试、比较及实际应用表明此算法是有效的。

The simulation result,which is obtained by applying the method to control the temperature of latices polyreactor,shows static error is effectively reduced and the robustness of the new approach in controlling temperature shock in the process of p...

将该控制器用于胶乳聚合反应釜的温度控制，仿真结果表明该控制器可以有效地消除静态误差，并对聚合反应生产过程中的温度骤变有很好的鲁棒性，实际应用效果也表明了该方法的优越性。

For many instruments, the distributions of their real market returns are leptokurtic and fat tails, thus a correction factor was introduced to improve the precision of VaR.

考虑到实际的资产价格分布的尖峰厚尾性，引入了正态修正因子θ，以改进VaR的风险评估效果。

The liveness is an important property for Petri net,and it is difficult to decide whether a Petri net is live or not.

Petri网的活性反映了实际系统的无死锁性。本文讨论了一类结构简单的Petri网？

Therefore, it is better to install the evaporator closed to the ceiling. Besides, an appropriate airflow velocity and loading gap is suggested to be set by considering both the loadage and the uniformity of temperature field in practical applications.

因此，在实际冷藏运输过程中，蒸发器应尽量贴近顶棚安装，以形成良好的贴附射流效果；同时，应综合考虑装载量以及温度场的均匀性，选择最合适的送风速度以及货物装载间隙。

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