查询词典 discrete optimization

With digital communication, there is no continuous carrier wave. Instead, bits are transmitted as brief, discrete pulses.

事实上，大量的新的通信设备是数字式的，用数字通信不存在连续的载波，而是把数位作为简单的离散脉冲传输。

Moreover, 3D discrete element code (3DEC) was used to solve the deformation of the high slope in the modes of mixed discontinuousness and degenerate continuousness. The influence of structural plane on the calculated result was discussed, and the stability of the high slope at inlets after excavation and reinforcement was analyzed by comparison of the calculated results in different calculation modes.

运用三维离散单元法(3DEC)进行了混合不连续和蜕化连续2种方式的求解，在比较不同求解方式所得计算位移的基础上，探讨了结构面对计算结果的影响，分析了进水口边坡在开挖、加固作用下的变形状况和稳定性。

The discrete element method and the finite element method have their own advantages and weaknesses. Basically, the DEM was developed for predicting the failure problems accompanying with the transition from continuum to non-continuum media. However, it is not accurate to calculate the problem of continuum media. The FEM may forecast the failure area of the material reasonably, while it is hard to calculate the failure process in brittle media. Therefore it becomes a good choice to combine the two methods to construct a hybrid model.

离散元法和有限元法等数值计算方法各有其优势，同时也都存在不足之处：离散元法适于处理由连续介质向非连续介质转化的破坏问题，但对于连续体计算结果精度不高；有限元法适于预测材料破坏的区域，但难以直接用于计算脆性材料破坏过程，因此将两种方法结合可以形成一种较好的混合模型。

A discrete method for contouring of high order triangular elements is presented in this paper.

该文提出一种画高次三角形单元等值线的离散方法。

The concept of controlled λ-exponentially contractive set for the systems is introduced,and relation between the set and that for its Euler approximation discrete-time system is also established.

首先，引入连续时间系统的受控λ-收缩集概念，并建立了与其Euler逼近的离散系统的受控收缩集之间的关系。

In this thesis, variable structure control in discrete systems is mainly studied.

本文主要针对离散情况下的变结构控制进行了研究。

The variable structure control of discrete time systems based on intelligent control is presented in this paper.

提出了一种基于智能控制的离散变结构系统。

Then characteristics and design methods of variable structure control for discrete-time systems are introduced.

然后讨论了离散系统的变结构控制的设计特点和方法。

Variable structure control of discrete-time systems and its applications in shot-concrete robot are discussed in this paper.

本文探讨了离散系统的变结构控制理论及其在喷浆机器人中的应用。

The problem of the design of variable structure control for discrete-time systems is considered.

针对离散时间系统变结构控制的设计问题进行了研究。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。