离散的

A software HF channel simulator based on Watterson model was presented according to the characters of multipath, fading, Doppler frequency shift and Doppler frequency spread in HF channel.

对短波信道多径、衰落、多普勒频移及扩展等现象进行了分析，并且基于Watterson离散信道模型，设计了一种全软件的短波信道模拟器，为短波通信系统性能测试提供了条件。

The stability of system is analyzed, and weak convergence condition for output tracking is given.

本文考虑离散时间随机系统S，系统的时滞为1，其模型形式如下

This article proposes a method for well log curves intersection recognition using Discrete Hopfield Neural Network.

提出一种基于离散型Hopfield神经网络的测井曲线交叉线识别方法。

The equations of the towed cable motion are based on Ablow and Schechter model and six degree-freedom ordinary differential equations are used in the analysis of the motion of a towed body. The partial differential equations are discretized by finite difference method and the transient values of towed body depth and cable tension are computed by Newton Iteration when the heave compensation system performs and the length of the cable varies.

拖缆动力学模型基于Ablow and Schechter模型，拖体采用水下运载体六自由度方程模拟，运用有限差分法离散偏微分方程组和牛顿迭代法计算变缆长情况下拖体深度与拖缆各点张力的动态取值。

Objective Analyzing the changes of QT dispersal degree of cardiogram of unstable anginal patients and healthy adults and exploring the effect on QTd of unstable anginal patients by using β1 retarder-metoprolol.

目的分析不稳定心绞痛患者与健康成人心电图QT离散度变化及探讨选择β1受体阻滞剂—美托洛尔对不稳定心绞痛患者QTd的影响。

Objective:To study the effects of percutaneous transluminal coronary angioplasty on QT dispersion in angina pectoris patients.

目的：探讨经皮腔内冠状动脉成形术对心绞痛患者QT及JT离散度的作用。

Based on discrete chaotic signals, an approach to calculating the noisy performance of the antipodal chaos-shift-keying system with a coherent correlator under a AWGN and multiuser environment is presented.

基于离散混沌信号，提出一种在AWGN环境中双极性相干CSK系统多用户噪声性能的分析方法。

The flow discharge at that point can be used as the estimated value of the bankfull discharge.

若以流量为参数，高含沙水流含沙量与流量构成一维离散动力系统；对于一般挟沙水流，含沙量随流量演化过程中的临界点，出现在流量与含沙量乘积为某一定值之时，该临界点处流量为平滩流量估算值。

The motions of coal particles was simulated with the Discrete Element Method in the bulling fluidized bed.

应用离散单元方法对流化床内煤粒的运动进行了模拟。

In order to avoid the chattering phenomena in the general slide mode control, this dissertation introduces a nerve cell discrete sliding mode control method based on CMAC (cerebella model articulation control) that combines the merit of sliding mode control and CMAC.

针对常规滑模变结构控制中存在抖振问题，本文将小脑模型关节控制器与滑模控制相结合，提出基于CMAC的神经元离散滑模控制策略，并对该控制算法进行了仿真研究和实验研究。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。