查询词典 necessary condition

According to the history development and basic values of the silent power system ,our will is necessary and inevitable to the usher in of the silent power system of ,but how usher in, how establish, writer will from the origins of the silent power system ,development, present condition our country present stage concrete the state of nation do with plain analysis, conceive to establish the silent power system that it has the Chinese state of the nation characteristic, to rise and throw the function that the brick leads the jade.

根据沉默权制度的历史发展及基本价值，我国对沉默权制度的引进将是必要的和必然的，但如何引进，如何确立，笔者将从沉默权制度的起源、发展、现状和我国现阶段具体国情做以浅显分析，设想确立其具有中国国情特征的沉默权制度，以起抛砖引玉的作用。

1It is the first time to study the direct method of solution for singular integral equations with solutions having singularities of order one. The necessary and sufficient condition for the solvability and the close form of the solution are obtained.

本文主要在以下几个方面有所创新：第一，首次研究了具有一阶奇异性解的完全奇异积分方程的直接求解，并得到其可解的充要条件和解的封闭形式。

It is proved that if the optimal solution tree has an inter-node, the necessary and sufficient condition that tree structure GAs are solution foundable is that the initial population contains an inter-node; the upper limit of solution foundable probability is also calculated and the population size is proved to increase at most in a polynomial of increasing problem complexity and the probability upper limit.

本文接着给出了当初始群体随机产生，只有杂交算符作用或只有复制与杂交算符作用的遗传算法有解的充要条件，并加以证明；而且求出了这时有解的概率上限，并证明群体大小的增加不超过问题复杂性和有解概率上限的某个多项式。

By using this graphical stability criterion, a necessary and sufficient condition for the closed-loop stability is given.

此方法也可用来求解系统的相对稳定度问题和应用于其他任意给定被控对象。

In reality, UN membership is neither a necessary nor a sufficient condition for functioning statehood.

现实当中，成为联合国会员不是必要，也不是运作中的国家实体所必须要具备的条件。

As an application, we develop the real-valued implicit Lagrangian and the corresponding smooth merit function for SCCP, and give a necessary and sufficient condition for the stationary point of the merit function to be a solution of SCCP.

在一致Ca(来源：ABC5fe9论文网www.abclunwen.com)rtesian-P性质下，证明此价值函数可为SCCP提供一个全局误差界。最后，给出了求解SCCP的一个混合牛顿算法。

Thirdly, under the condition with noαpriori smoothness, in order to obtain the optimal convergence rates, it is not practical to use theαpriori rule. And it is necessary to use the a posteriori stopping rule which not only depends on the error boundδbut also on the perturbed data y~δ.

再次，在没有先验的光滑性信息情况下，为了获得最优收敛速率，利用先验选取准则则变得不再实用，而利用不仅依赖于误差界δ而且依赖于扰动数据y~δ的后验停止准则是必要的。

Firstly, a necessary and sufficient condition for an uncertain multi-channel descriptor system to be robustly stabilizable with a specified disturbance attenuation level is derived in terms of a strict nonlinear matrix inequality.

主要考虑分散H输出反馈控制问题。推导出了使不确定多通道奇异系统能鲁棒稳定且满足一定的性能指标的充分必要条件，没有等式约束的非线性矩阵不等式条件。

According to the lowest free energy law of forming steady configuration, it is proved that under the hypotheses of the model the necessary and sufficient condition for the stabilization of magnetic structure is the moment direction of the total saturation magnetization 〓 of a compound should be parallel to that of external magnetic field 〓, and the direction of each sublattice moment 〓 must also be parallel to that of the effective field B〓 acting on the 〓.

根据形成稳定结构的能量最低原理，证明了在该模型的假设条件下，系统磁结构稳定的充要条件是：化合物总的磁化强度m与外磁场B的方向相同，并且各次晶格的磁矩m〓与作用于它们的有效场B〓的方向一致。

Furthermore, a optimization model is established to get a necessary and suff icient condition. The arithemetic of the second questino fits the third question as well.

对于第二题，本文发现坐标变换时各点之间的欧氏距离不变，利用各点的距离关系，给出一系列的判定条件，最后用优化算法判定。

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％。