查询词典 backward difference

Concerning the domestic backward situation, studying the dynamics of coiler andimproving the existing coiler will lead enormous benefits to our country.

因而，研究卷取机的动力学行为，运用现状理论和方法对现有设备进行技术改进，是有着巨大经济效益的。

His first ball was a long hop which Collingwood pulled straight to Morkel at deep backward square leg.

他的第一个球是一个长期的跳的科林伍德在深拉方腿向后直莫克尔。

Since the rocking of the nipper shaft causes the nippers to move backward and forward through a series of links, the original position of nipper frame is altered when changing the detaching distance, resulting in the change of other process parameters of the comber.

由于精梳机的钳板摆轴传动钳板的方式都为四连杆机构，在进行落棉隔距的调整时，改变了连杆的初始位置，因此精梳机的其它工艺参数也随之改变。

Today, backward country is in after be on socialism to develop way, pass productivity span type develops, achieve the world history progress to socialism and communistic direction, what make a kind of history is inevitable.

今天 ，落后国家在走上社会主义发展道路之后，通过生产力的跨越式发展，实现世界历史向社会主义和共产主义方向的发展，就成为一种历史的必然。

In part 1, we explore some properties of solution y of a backward stochastic differential equation, such as comparison theorem, reverse comparison theorem and uniqueness theorem of generator.

第一部分研究了倒向随机微分方程的解中y的性质，其中包括解的比较定理，逆比较定理，生成元的唯一性定理。

Under the most elementary conditions for backward stochastic differential equation introduced by Peng S., we put forward and prove a general converse comparison theorem.

在由彭实戈引入的倒向随机微分方程的最基本的条件下，提出并证明了一个一般的反比较定理。

In this paper, we study the comparison theorem of backward doubly stochastic differ-ential equtions with continuous coefficient by Tanaka-Meyer formula.

利用Tanaka-Meyer公式研究了双重倒向随机微分方程在连续条件下的比较定理。

Based on this theory,an analysis of the problem of payoff to the concessionaire in the concession contract when there are not government guarantee s and the concessionaire is risk-averse is carried out by using the backward-induction method.

基于这样一个理论框架，利用逆向递推方法，文章对没有政府担保下，特许权人为风险厌恶的政府特许权合约的报酬设计进行分析，给出了政府特许权人的风险态度和服务定价之间的关系。

Then the stationary joint probability density, the conditional reliability function, the mean first-passage time of the optimally controlled system are obtained from solving the reduced FPK equation, the backward Kolmogorov equation and the Pontryagin equation, respectively of fully averaged systems.

求解与之相应的Fokker-Planck-Kolmogorov方程得最优控制系统的联合概率密度，进而求得最优控制系统的平均幅值；求解与之相应的后向Kolmogorov方程得最优控制系统的条件可靠性函数，进而求得首次穿越时间的条件概率密度；求解与之相应的Pontryagin方程得最优控制系统的平均首次穿越时间。

First, the backward Kolmogorov equation for the conditional reliability function and the Pontryagin equation for mean first-passage time and then- associated boundary and initial conditions are derived based on the stochastic averaging methods for quasi non-integrable, quasi integrable and quasi partially integ...

首先利用拟不可积、拟可积非共振及拟部分可积非共振Hamilton系统的随机平均法分别给出了研究该系统首次穿越问题的提法，包括计算条件可靠性函数的后向Kolmogorov方程及计算平均首次穿越时间的Pontryagin方程及其边值条件。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！