好理论的

The calculation results show that the temperature of the valve cone changes periodically, leading to thermal stress changes periodically, which is the main reason of the valve cone pit corrosion; the operating temperature of the valve can be reduced by using the higher thermal conductivity materials; at the Same time, 3-D FEM provides a good theoretical basis in the process of the design and improvement for the parts of ICE.

计算结果表明：气门锥面处周期性的温度变化，会导致周期性变化的热应力，是导致气门锥面疲劳点蚀的主要原因；采用较高导热系数的材料可降低气门的工作温度；同时，三维有限元法能为内燃机零部件的进一步设计改进提供很好的理论依据。

Then we studied the photothermal deflection on membrane with high transparence for the first time. When the product of the thermal conductivity and thickness of film is correspond to that of substrate, the thermal conductivity and diffusivity of film could be measured by photo-thermal deflection method.

然后，第一次探讨了透明性好的带衬底的薄膜材料的光热偏转理论，讨论了只有在薄膜热导率与厚度的乘积与衬底的热导率与厚度的积相比拟时，可以使用光热偏转方法测量薄膜的热导率和热扩散率。

To suppress the noise which caused by the fuzzy character of XLPE sample, the size of the photodetector was determined based on the analysis of the light intensity distribution in the spatial frequency plane when the laser beam passing through the sample was collected by lens. A series of detectors were designed to eliminate the time response decreasing effect caused by the increasing of the detector size. The developed laser system could resolve defects of 40 um diameter in XLPE tape with the 120um diameter and 400Hz scanning laser beam. after above results was used.

为了消除由于XLPE材料光弥散效应引起的信号噪声对信号幅度测量的影响和提高测试速度，研制了阵列组合式光电探测器，理论分析和实验验证都证明了该探测器有较好的频响特性和较低的噪声水平，应用这两项成果组成的信号系统及微机数据采集电路可在400Hz扫描频率下，扫描宽度所限制的120μm光束直径下获得40μm的测量分辨率。

Based on the analysis of the driving scheme,the fit condition,the abutment,the condition of deviating center and the balance of load for K-H NW planet gear mechanism,some important conclusion that the mechanism has high ratio have been drawn.

对K-H类NW型齿轮机构的传动方案、装配结构、偏心距及均载进行了分析讨论，得出了这种机构具有较大的增速比及较好的均载、动平衡等重要结论，为这一机构的开发应用提供了必要的理论依据。

The results indicate that the 3D-QSAR model is significant and has good predictability, providing useful information for designing new good activity AHAS inhibitors prior to their synthesis.

根据CoMSIA模型的立体场、静电场、氢键给体场三维等值线图不仅直观地解释了结构与活性的关系，并且与用FlexX预测的结合模式相一致，证明了我们预测的结合模式是可靠的，为进一步设计高活性的标题化合物提供较好的理论指导。

We also compute the critical curves and caustics of lens samples, the results show that they can fit the theoretic curves very well.

计算结果表明此算法能够在很高的精度上构建引力透镜模拟样本的面密度分布轮廓，由面密度计算出来的透镜的临界曲线和焦散曲线也能较好地和理论曲线吻合，结果是令人满意的。

In the traditional casting process design, it demands technologist to master plenty of theory and referring to many correlative manuals, and it is cockamamie and fallible to design the size of riser. However, riser design is not only the key of casting process, but also very important for CAE simulation.

传统的冒口设计需要综合大量的理论知识并查阅很多相关的手册，计算繁琐且易于出错，而冒口设计不仅是铸造工艺中关键的一步，同时又与CAE模拟紧密相连，设计好铸造工艺的零件可以直接输入到CAE 软件上进行模拟。

Because of the rigor of theory, simpleness, convenience and better design effect in LBG algorithm, LBG algorithm is adopted in clustering feature codebooks. It has guaranteed the quality of codebooks and systematic quality is got the assurance too.

由于LBG 算法其理论上的严密性、应用于上的简便性以及较好的设计效果，在特征码本聚类时采用LBG 算法，保证了码本的质量，系统的质量也得到保证。

The style of mountain residences is simple and dull and follows the same pattern, which lost the specific characteristics of being interdependent with mountains and water and result in grievous ecocide and destruction to the town landscape.

因此，在我国城市化进程加速发展以及西部大开发顺利实施的背景下，基于山地城镇多且主要位于西部地区的现实状况，如何更好利用自然山水的环境资源优势，创造出符合山水特色的、舒适宜人的山地居住区空间形态，具有重大的理论价值和现实意义。

Through the study above, it formates a set of theory and method on the favourable reservoir characteristics and distribution modle of volcanic reservoir.The method can not only be applied into the volcanic rock reservoir studies of the Nanpu Sag Lower Tertiary, but also can private a good reference value to reserch on the other volcanic rocks which have the similar geological conditions.

通过以上的研究，形成了一套对火山岩储层特征及有利火山岩储层分布模式研究的理论与方法，这种方法不仅适合南凹陷下第三系火山岩储层的研究，而且对其它地质条件相似区域的火山岩特征研究也有很好的参考价值。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。