查询词典 differential calculus

The differential expression profiles of 588 known genes were determined using Atlas human cDNA expression array. Fifteen genes were differentially expressed following the overexpression of BNIPL-1. Most of them were involved in cell proliferation or cell apoptosis. Furthermore, the differential expression result was confirmed by semiquantitative RT-PCR.

然后采用人Atlas cDNA expression array对新基因BNIPL-1在细胞内的下游调控事件进行了初步研究。588个已知基因中有15个的表达发生了改变，其中大部分是细胞生长和凋亡相关基因，半定量RT-PCR验证了杂交结果的可靠性。

MRNA differential display was established by Liang and Pardee in 1992 for the purpose of displaying the mRNA differences between two tissues. Therefore, in the study, the related genes of early embryonic development of bisexual Artemia from Shan Xi in China have been studied by mRNA Differential Display.

但关于中国卤虫早期发育过程中基因表达的研究很少，还有待于进一步深入细致的研究和分析。mRNA差异显示法是由Liang和Pardee于1992年建立起来的，是用于显示不同组织和细胞之间mRNA差异的方法。

In this paper, the differential astigmatic detection method for defocus measurement with one-way defocused detector is developed from the conventional differential astigmatic detection.

本文在传统差动像散检测方法基础上，给出一种基于单向离焦的差动像散检测方法。

By adopting the asymptotic expansion method, the higher order partial differential equation was transformed into the system of ordinary differential equations.

采用渐近展开法，将该控制方程——高阶偏微分方程转化为常微分方程组，求解该方程组获得应力函数，进而得到功能梯度材料中裂纹尖端应力高阶渐近场的解析式。

In this paper,the asymptotic property for two kinds of ecological systems and oscillation for solutions of a neutral differential equations is studied by employing differential inequalities and using eigenvalue analysis,iterative algorithm,induction and comparison theorem etc.Here, the system\'s asymptotic property includes the uniform persistence,the global attractability of the solutions,the asmptotic stability of the solutions and the oscillation of solutions.

本文利用微分不等式、特征根分析法、迭代法、归纳法及比较原理等方法和理论，研究了两类生态模型解的渐近性和一类脉冲中立型微分方程解的振动性，其中包括模型的一致持久生存性，正平衡态的全局吸引性、局部与全局渐近稳定性以及解的振动性。

To improve the braking safety of automobile, the mechanics characteristic of differential brake was analyzed, automotive subsystems models were built by applying ADAMS/ Car, automotive mechanics simulation model was built by setting some main subsystems, beeline braking stability and turning braking stability were simulated, and the effect of differential brake on the stabilities was studied.

为了提高汽车制动的安全性，对差动制动的力学特性进行了分析，运用ADAMS／Car软件建立了汽车各子系统动力学模型，通过对主要子系统进行相应的设置，建立了整车动力学仿真模型，进行了直线制动及转弯制动稳定性仿真分析，研究了差动制动对制动稳定性的影响。

Autoradiography mrna differential display method, which can get more differential low|abundance dna bands, was superior to silver staining method.

银染mrna差异展示法适合于高丰度差异表达基因的快速筛选，而放射自显影mrna差异展示则能较彻底地显示两种细胞中多数mrna的差异。

Firstly, using strategy of introducing associated auxiliary equation to a givenpartial differential equation without admitting Lagrangian, we make the extendedequations possess a variational principle. Based on this, the concepts of extendedconservation law and extended symmetry to given partial differential equationare put forwarded.

首先，我们给出了引入伴随方程扩充原方程的策略，使给定偏微分方程的扩充方程组具有对应泛函，即称为Lagrange系统的方法，以此为基础提出了作为偏微分方程传统守恒律和对称概念的一种推广—偏微分方程扩充对称和扩充守恒律的概念；其次，先给出以得到的Lagrange系统为基础，利用N？

In part 2, we study the properties of the solution z of backward stochastic differential equation and backward doubly stochastic differential equation.

第二部分分别研究了倒向随机微分方程和倒向重随机微分方程中解z的性质。

Huang and Lin proposed the weak solution concept for Backward Stochastic Differential Equation This paper based on the predecessor's work , gives the weak solution concept for Backward Stochastic Differential Equation with continuous martingale,uses the Girsanov transformation, obtains its weak solution of the existence of a necessary and sufficient conditions, and on this basis obtains its weak solution of the existence of sufficient conditions,these sufficient conditions weakened the drifting coefficient which requested in the existence uniqueness of strong solution to satisfy the Lipschitz condition the request.

本文在前人研究的基础上，给出由连续鞅驱动的倒向随机微分方程弱解的概念，利用Girsanov变换，得到其弱解存在的存在的一个充分必要条件，并在此基础上得到了其弱解存在的一些充分条件，这些充分条件减弱了在强解的存在唯一性中要求的漂移系数满足Lipschitz条件的要求。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。