查询词典 necessary condition

One might begin by pointing out that conceivability is not a necessary condition for logical possibility.

一个可以是指出可设想性不是对逻辑可能性的必要性条件。

While nomoctacy is the necessary condition and foundation of concordant society.

和谐社会的实现和运转需要法治机制支撑。法治是社会和谐的前提和基础。

I think it's a necessary condition.

他说：我认为这是必须的情况。

A sufficient and necessary condition about a linear weak* densely defined operator is the generator of a contraction weak continuous operator semigroup on X* is given.

叮叫且川人蛋A川＊三5，人＞o 第三章从另一角度出发，利用定义在X"上的耗散算子刻画弱"连续算子半群的生成元。

We get a sufficient and necessary condition of controllability about a sequence set which is an ideal.

得到了一个序列集合是一个理想的条件下可控的充分必要条件。

For solving problem (1), this dissertation first presents a sufficient and necessary condition by dealing with inequalities using projection operator in convex analysis, and then proposes a kind of new neural network model based on the constraint domain:〓(2) Where P is a projection operator on Q.

本文利用凸分析中的投影算子处理不等式约束，首先给出二次规划问题(1)解存在的充分和必要条件，据于此提出一种新的基于约束区域神经网络模型〓(2)来进行求解，其中P为Q上的投影算子。

Then we discuss the sufficient and necessary condition which can guarantee that the original signal can be completely recostructed when using our decomposition and reconstruction formula of wavelet.

其次，给出了信号用分解公式进行小波分解与重构公式进行小波重构后完全恢复原信号的充要条件，并对完全重构充要条件的实现作了处理。

For the first time, the notion of translational accessibility and detachability during fixture loading and a sufficient and necessary condition for judging its existence are presented.

解决了对给定的测量力／力矩的集合，以及假设的可能接触状态和不确定性建模，对接触物体间接触状态进行识别这一基本问题。

In this paper, we provide a necessary condition and several sufficient conditions for a digraph to have a pair of disjoint quasi-kernels.

在这篇文章中，我们给出了一个有向图有一对不相交的准核的一个必要条件和若干充分条件。

A sufficient and necessary condition for nonlinear continuous time associate memory neural networks to be locally exponentially stable is obtained, and a function is defined for characterizing the domain of attraction of equilibrium point.

讨论非线性连续联想记忆神经网络平衡点局部指数稳定的判定条件及平衡点指数吸引域的估计，得到了平衡点局部指数稳定的充要条件，并引入一个特征函数，可以判定平衡点的邻域是否为指数吸引域。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。