法

As a result, it shows thatthe static or dynamic subsystem optimum alone is not equal to the system optimum. Three initial value problems met in the optimal design of flying vehicle are studied andconclusions are derived that: orthogonal test method can be adopted to decide the initial valueof static optimization problem, some mathematical techniques can be used to deal with thecostate variables of Maximum Principle and decide the initial value of the costate variable,the indirect method can be used to get the analytical solution under ideal case to guide thechoice of the initial control curve in the direct method. With some numerical examples oftrajectory optimization, it shows that all these methods are useful not only in accelerating theconvergence but also in converging to the global optimum.

针对飞行器优化设计中的三种初始值问题进行了研究，以远程弹道导弹弹道的工程优化为例说明，对于静态优化问题，采用正交试验法选取初始值，不仅可以大大加快收敛的速度，而且更有可能收敛到全局最优解；以气动力辅助变轨问题为例说明，用共态变量的一阶泰勒级数展开可以解决极大值原理中共态变量初值难于确定的问题；以二级弹道导弹的主动段弹道优化为例说明，利用间接法在理想情况下得到的解析解来指导直接法初始控制曲线的选择，将大大有利于提高直接法的收敛速度。

In this dissertation, dynamic phasor method based on the critical damping adjustment is developed to eliminate the numerical oscillation caused by the changes of the network configuration.

分析了基于梯形法的动态相量仿真的数值振荡问题，结合现有的算法和动态相量法的特点，讨论了基于临界阻尼调整法的动态相量法。

This research has used research techniques and so on literature analytic method, interview law, questionnaire survey procedure, cut-and-try method, the data analysis and the experimental result indicated that, the experience type study theory took one kind emphasized specially experience the new teaching theory, suits specially in music this kind of art class teaching activity.

本研究采用了文献分析法、访谈法、问卷调查法、实验法等研究方法，数据分析与实验结果表明，体验式学习理论作为一种特别强调体验活动的新的教学理论，特别适合于艺术类教学活动。

The productions of glycin oxidation are complicated and the cost is high. The cyanogenesis is poisonous and unsafe.

国内外合成羟基乙酸的方法主要有甘氨酸氧化法、氰化法、醛类羧化法、甲醛和甲酸甲酯偶联法、草酸电解法、氯乙酸水解法等。

According to the definition of the minimum zone method, the mathematical model is presented for evaluating flatness error and establishing datum plane equation.

分析了常用的近似评定法(三点法、对角线法、最小二乘法等)存在的局限性，根据最小区域法的定义，给出了基准平面方程及平面度误差评定目标函数数学模型的建立方法，并举例说明了采用Matlab进行平面度误差的计算。

In all the methods of catalysts preparation, sol-gel process drying by high temperature decrepitation could achieve the best catalyst.

而在浸渍法和几种溶胶—凝胶法中，使用溶胶—凝胶法并使用高温烧爆法干燥的催化剂取得了最高的产量。

Accordingly the standard of legal philosophy has experienced such states as religious deism, national power, and rights.

法的存在形态经历了神法、宗教法、国家法、市民法、以及现在的宪政状态等，法哲学本位理论也经历了宗教神、国家权力、权利等形态。

The part of Roman law which has had most extensive influence on foreign subjects of inquiry has been the law of Obligation, or what comes nearly to the same thing, of Contract and Delict.

罗马法中对其他研究主题有最广泛影响的部分是"债"法，或是接近于"债"法的部分，即"契约和侵权"法。

Using the methods of Gallup, documentary reference, and comparative analysis, utilizing the economics, demotics, managerial theory and comparative theory, this dissertation researches the driving factors of Chinese university athletic sports, the relationship between human capital investment and innovation of system, and the development of university athletic sports in USA and China.

本研究采用文献资料法、问卷调查法、比较分析法、调查访问法，运用经济学、社会学、管理学、比较学等学科的相关理论，对我国高校竞技运动发展的驱动机制—人力资本的投资、制度的创新以及中美两国高校竞技运动发展状况进行了研究和比较，结论如下： 1。

Result: The density values measured by two methods investigated above were significantly different ( P .01), the density values of Pyritum, Haematitum, calcined Pyritum and calcined Haematitum measured by direct densimetry were increased 1.66%, 9.43%, 96.72% and 9.02%, respectively compared with that measured by sealing wax densimetry.

结果：直接密度测定法与封蜡密度测定法测得的自然铜生品、赭石生品、煅自然铜、煅赭石的密度有显著的差异( P 。01)，直接密度测定法比封蜡密度测定法测得的自然铜生品、赭石生品、煅自然铜、煅赭石的密度平均增加1.66%，9.43%，96.72%，9.02%。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。