直流的

In these converters, which were discussed in detail, the average dc output voltage Ud is controllable in magnitude and polarity, but the dc current Id remains unidirectional.

这些变流器前面已经详细地讨论过，其平均输出电压的幅值，极性是可变的，但是直流电流 Id 是单向的。

The simulation results show that this method can make PWM rectifier run with unit power factor, the output DC voltage stabilize on the desired value with the fast dynamic response.

仿真结果表明，该方法能使所设计的PWM整流器运行于单位功率因数，输出的直流电压基本稳定在期望值且具有快速的动态响应，满足了设计要求。

DC Universe consist of some of the most popular heroes and villains from both universes, with most being available from the beginning of the game and some unlockable throughout.

游戏人物的真人快打主场迎战直流宇宙包括一些最流行的英雄和恶棍来自宇宙，绝大多数是可以从一开始的游戏和一些解开整个。

It has a base internal circuit, resulting in a period of 20ms, the base width of 1.5ms signal, will be the DC bias voltage and the voltage comparator potentiometer to obtain the output voltage difference.

它内部有一个基准电路，产生周期为20ms，宽度为1.5ms的基准信号，将获得的直流偏置电压与电位器的电压比较，获得电压差输出。

With the development of electronic technology, the use of single-chip microcomputer-controlled voltage regulator dc power supply has greatly improved performance.

随着电子技术的发展，利用单片机控制的直流稳压电源性能有很大的改观。

By comparing DC, AC and step-motors and analyzing the driving characteristics of the warp beam, a conclusion was drawn that a higher performance to price ratio could be got when a step-motor was selected for the warp beam.

通过对直流电机、交流电机和步进电机的比较，结合织机的织轴驱动特点，得出选用步进电机有较高性价比的结论。

Discharge is ignited between a copper electrode with hemispherical head and water electrodeonce the air gap is broke down, using direct current power supply.

放电是在前端为半球状的铜电极和水电极之间，通过外加的直流电源使空气被间隙被击穿后产生的。

In this thesis, we have investigated a series of Ti-based hardcoatings prepared by cathode arc vapor ion-plating method, such as TiN, TiAlN, AlTiN and TiAlN, also attempted to fabricateN coatings with high Al content.

本文研究了利用直流和脉冲偏压阴极弧离子镀设备制备的一系列从二元到多元的Ti基硬质薄膜TiN、TiAlN、AlTiN、TiAlN，并尝试了利用ABS方法制备高Al含量的N薄膜。

First, this paper analyzes the mathematical model for the blushless DC motor, and set up the architecture of the contrl system.

本文对无刷直流电机的工作原理进行了详尽的分析，建立了完善的数学模型和控制框图。

For the control method of brushless DC Motor, it is very important to check that passing turns sub-position.

在无刷直流电机的控制中，转子位置的检测是至关重要的。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。