变变

According to the natures of the 3rd-sequence, two kinds of facies-change surfaces and two kinds of diachrononism in stratigraphical records, the sequence stratigraphic framework can be established.

在前人岩相古地理研究的基础上，根据三级层序的两大特征——"空间上相序的有序性和时间上环境变化的同步性"，并考虑到地层记录中的两种相变面和两种穿时性――"静态相变面及其相变面穿时、动态相变面及其间断面穿时"，建立研究区域志留系的层序地层格架，并在此基础上从沉积物的时间演化序列和沉积相的空间展布形式入手，恢复其古地理背景。

Variational identity play a important role to prove nonexistence and get prior estimate of solution, In this thesis, we study following parts on the relationship of symmetry group of partial differential equations with variational structure and the variational identity.

变分恒等式在证明具有变分结构偏微分方程解的不存在性以及得到方程解的先验估计时有着非常重要的作用，本文研究了一些具有变分结构偏微分方程的对称群与其变分恒等式的关系。

The dissertation established the method and VE-AMSAA model of integrated evaluation of reliability based on varied population-environment data by using of reliability growth AMSAA model as foundation. By conversing time of test in AMASSA model, the difficulty in subinterval estimation of this integrated evaluation of reliability was solved and determination of environment conversion factors based on AMASSA model was also presented, including optimizing principle and method.

建立了基于可靠性增长AMSAA模型的变母体变环境数据可靠性综合评估方法和模型VE-AMSAA模型，通过对AMSAA模型中的试验时间进行折合，解决了变母体变环境数据可靠性综合评估的区间估计问题，并给出了基于AMSAA模型的环境折合系数的确定方法，包括优化准则、寻优方法。

One of the most important extension is system of variational inequalities. In Chapter 5, we consider a system of generalized variational-like inequalities problems.

近年来，变分不等式已经开始向各个方向推广，出现了诸如广义变分不等式，混合变分不等式，广义似变分不等式等。

In order to analyze and correct this effect, the method to calculate turn-off time is given. According to theoretical TEM response of multiturn loop source, TEM response affected by linear and half-sine turn-off current was calculated, and Taylor's series expansion was used by calculating TEM response of half-sine turn-off current. The two mode's responses, linear mode's response and half-sine mode's response, were analyzed in turn-off time 2μs-100μs.

为了分析和校正这种影响，文中给出了关断时间的计算方法，根据多匝回线源产生的瞬变场理论解析式，计算了线性和半正弦关断电流影响下瞬变场表达式，计算半正弦关断电流产生的瞬变场时将正弦函数进行泰勒展开；分析了关断时间在2 μs~100 μs之间两种关断模式产生的瞬变响应。

From the theory of phase transformation and thermal elastoplastic, and based on experimental data of laser quenching, a non linear coupling heat conduction equation considering phase transformation, temperature field and variable physical properties can be estabilished.

从相变理论和热弹塑性理论出发，并结合激光淬火实验资料，建立了考虑相变过程、温度场和变物性系数的非线性耦合热传导方程；建立了相变组织与材料性能的数值计算模型。

Having a good teacher has made all the difference for him.B. Translate the following into Chinese.

当我细细琢磨我的信条"变是好事，变是进步"时，我意识到我已接受了"变"，并在充分利用"变"。

Mass proliferation of Trypanosome results in a weakness and death of host. The studies have showed that the variant antigen type known as predominant variant antigen type is limited in early infection; however, a high repetition can be seen and reaches 60%.

有研究表明锥虫在感染动物早中期产生的变异体数目是有限的，且这些变异体出现的重复率很高，最高可达 60%，我们称这些变异体为优势变异体。

Unfortunately, there is inevitably difference in characteristics of the induction motors and converters in a parallel AC drive system, therefore each induction motor as well as converter can not operate at the same working point, some may be overload, some underload.

并联着的各个交流调速系统的负载是不均衡的，这是因为逆变器所带的负载—异步电动机参数及特性不可避免地存在差异，两或多台逆变器作为电源，其等效参数也很难一致，各驱动轮径总存在偏差，因此各台逆变器的输出电流和各台异步电动机的定子电流是不相一致的，有的逆变器、异步电动机可能过载，有的还可能欠载。

On this foundation, application changes control of structural slippery model designed dimensional machine theoretically inertial space contrail coordinates brachial carrier attitude and extreme ungual hand of motion change; of program of control of structural slippery model to overcome afore-mentioned changing controller of structural slippery model trembles brace up defect, add designed an ambiguous controller, with coming to dynamic adjustment to change according to control output of the system the structure slips the coefficient that the fast approach such as modular controller leads, achieve thereby make sure the system is had already answer quickly can eliminate original controller to have again tremble brace up the purpose of defect.

在此基础上，应用变结构滑模控制理论设计了空间机械臂载体姿态和末端爪手惯性空间轨迹协调运动的变结构滑模控制方案；为了克服上述变结构滑模控制器抖振的缺点，附加设计了一个模糊控制器，以根据系统的控制输出来动态调节变结构滑模控制器等速趋近率的系数，从而达到既保证系统具有快速响应又能消除原有控制器具有抖振缺点的目的。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。