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ABSTRACT: With the development of the times, digital electronictechnology has been popular in all of our lives, work, research,and all fields. This paper introduces a NC DC power supply, thepower consists of analogue power supply, display circuit, controlcircuit, digital-to-analog converter and circuit amplifier.

随着时代的发展，数字电子技术已经普及到我们生活，工作，科研，各个领域，本文将介绍一种数控稳压电源，本电源由模拟电源、显示电路、控制电路、数模转换电路、放大电路五部分组成。

In the proof an analytic technique for the study of strong limit theorems of Markov chain is extended to the case of Even odd Markov chain fields on trees.

证明中将研究马氏链强极限定理的一种新的分析方法推广到树上奇偶马氏链场的情形。

The research fields are calculus of single variables functions and several variables functions, space analytic geometry, series, differential equation.

通过本课程的学习，使学生掌握一元函数微积分、向量代数和空间解析几何、多元函数微积分、无究级数、常微分方程等方面的基本概念、基本理论和基本运算技能，为学习后继课程和进一步获得数学知识奠定必要的数学基础。

The research advances in the production, physical-chemical character, toxicity, analytical method and transformation of MC were reviewed, and further more the promising research fields on MC were also prospected.

主要针对MC的产生、物化性质、毒性、检测方法和处理方法的国内外最新研究进展进行了综述，并对重要的研究领域进行了展望。

It is approved that the technology and analyzer were useful in the practical fields.

说明了这种技术和仪器在应用领域的作用。

His methods of working include method of coming from the mass and working among the mass, that of stereotypical model, that of political mobilization, that of analysis like that of anatomization of a sparrow, that of combination of political work and administrative work, and combination of ideological-political work and practical work in all fields, etc.

思想方法包括：阶级和阶层分析的方法，矛盾分析的方法，实践第一和理论与实践相结合的方法；人民至上的价值选择和价值判断方法；工作方法包括：从群众中集中起来又回到群众中坚持下去的方法，典型示范的方法，政治动员的方法，解剖麻雀的方法，政治工作与行政手段相结合的方法，思想政治工作同不同领域具体业务工作结合的方法等。

His methods of thinking contain methods for analysis of social classes and groups, and contradictions, practice first and combination of theory and practice; methods of value choice of people's benefits above all else and value judgment. His methods of working include method of coming from the mass and working among the mass, that of stereotypical model, that of political mobilization, that of analysis like that of anatomization of a sparrow, that of combination of political work and administrative work, and combination of ideological-political work and practical work in all fields, etc.

思想方法包括：阶级和阶层分析的方法，矛盾分析的方法，实践第一和理论与实践相结合的方法；人民至上的价值选择和价值判断方法；工作方法包括：从群众中集中起来又回到群众中坚持下去的方法，典型示范的方法，政治动员的方法，解剖麻雀的方法，政治工作与行政手段相结合的方法，思想政治工作同不同领域具体业务工作结合的方法等。

The inlet and blade-to-blade flow fields of a centrifugal impeller were measured using two-dimensional laser Dopller anemometer in...

本文用二维激光多普勒测速仪测量了离心叶轮进口和旋转叶片通道内的流场。

It is shown that laser anemometry, as a non-intrusive anemometer, is more suitable and convenient than traditional instruments in application to rotational flow fields, especially to the flow within centrifugal impellers which have only small width of flow passage.

研究表明，激光测速仪作为一种先进的非接触式测速仪器在旋转流场特别是流道高度很小的离心旋转流场的研究中较之传统仪器更合适、更方便。

Under the condition of anthropogenic heat investigation, the velocity and temperature profiles measured with three-cup anemoscope and hygrothermograph and the surface air temperature profile calculated by CTTC model, the distribution of flow and temperature fields were simulated.

以对小区内的人为热估算结果作为内热源，对西安市典型小区测量获得的风温廓线和利用改进的CCTC模型计算获得的小区地表温度分布作为主要边界条件，计算分析了小区流场和温度场的时空分布规律。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。