查询词典 constraint

Key words: analytical mechanics; event space; variable mass; nonholonomic constraint; principle of Jourdain; Noether′s theorem

考虑N个质点组成的系统，其中每个质点的质量mi(i=1，…，N)是时间、位置、速度的函数， i为第i个质点mi的位矢。

A portfolio selection model with transaction costs under the constraint of higher moments such as skewness and kurtosis was discussed.

讨论了有交易费用的、包括偏度和峰度在内的高阶矩约束的多目标最优投资组合选择模型。

It not only constraint the development of state economy, but also increase polarize very probably, result in labile factor and serious potential problem for social security .

解决的不好，它不但会制约社会经济的发展，而且很有可能加大两极分化，造成不稳定因素，为社会安全带来巨大隐患。

For improving convergence, this paper firstly introduces Lagrange function to solve constraint problem in large-scale system optimization, secondly constructs the hierarchical optimization networks for large-scale industrial systems with Hopfield network.

为了 提高算法的收敛速度，引入Lagrange函数解决大系统优化问题中的各种约束，并用Hopfield 网络实现了大系统稳态递阶优化的网络算法，最后给出了某一大系统辨识及优化的仿真结果。

You will be able to uses its math constraint to search and develop advanced Linguistic statistics and information on any given layer through 10 layers/latticework of data.

你可以使用它的数学常数在任意给定的10层/格数据中搜索和开发高级的语言统计学和信息。

The results show that there are optimal damping coefficient leading to the minimum response of the primary core-tube, and that the dynamic response is not sensitive to the lesser damper stiffness, and that the optimal value affected by inter-story drift ratio of the suspended floors as constraint condition and setting reasonable structural parameters could meet the optimization objectives and the inter-story drift ratio limit of the suspended floors.

结果表明：存在最优阻尼器的阻尼系数，使得主体核筒的响应最小；当阻尼器的刚度较小时，可以忽略其对结构动力响应的影响；悬挂楼面的层间位移角作为约束条件，影响结构参数的优化值；通过设置合理的参数才能够同时满足优化目标和悬挂楼面的层间位移角限值。

The technique of perturbations constraint when applied to degree reduction of Bézier curves gives fairly well results This paper discusses why these kind of technique have limitation when applied to B-spline curves, and the least squares approximation approach is presented for reducing the degree of B-spline curves Examples comparing the new method with existing ones are illustrate

将扰动约束技术应用于B啨zier曲线的降阶给出了理想的结果讨论了将这类方法应用于B样条曲线降阶时结果不理想的原因，提出了采用最佳平方逼近技术对B样条曲线做降阶运算的方法；并用实例对该方法和基于扰动约束的降阶方法进行了比

Can see the hero, one motionless in the snow, and always stopped to move forward to maintain the posture of the forces led by captain can imagine how is how to maintain, they are there are still some who I do not know how to disappear in that deserted road, of them who will at that time going on, with no rules, no action did not listen to it, you can certainly say no, because there is no constraint, arbitrary, laissez-faire freedom, this is not our revolutionary forefathers, our Creator, we have reason to forget, do not remember to pray for them?

可以知道那位英雄，在雪地上一动不动，始终保持站住向前迈步的姿势，可以想象队长带领的部队又是如何如何坚持的，他们中还有部分人更不知道是如何消失在那荒芜人烟的路途中，他们中又有谁在那个时候各做各的，没有规矩，不听也不行动的呢，可以肯定的说没有，因为没有约束，任意，放任自由，这不是我们的革命先辈，我们的造物主，我们有理由忘记，不回忆为他们做礼拜吗？

Based on the full three-dimensional numerical simulation for the centrifugal pump, an optimal mathematical model of blade curve is set up. In this model, the object function is the minimum length of the blade curve; the constraint condition is no recirculation atr=0.5. This model makes the design of optimum blade curve efficient.

在对离心泵内部流场进行全三维数值模拟的基础上，建立了叶片型线优化设计的数学模型以叶片长度最短为目标函数，叶轮相对半径，r=0.5处无回流为约束条件，讨论了该模型优化计算的方法。

An Approach to dynamic traffic control system for urban expressway with constraint of queue length of on - ramp off-ramp .

考虑进出口匝道排队约束的城市快速道路交通系统动态控制方法。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"