直流的

Input voltage peak limited to 600V for DC and low frequency.

对直流和低频输入电压的峰值上限为600伏。

Permanent magnet material is one of the most important influencing factors for the performance of brushless DC motor.

永磁材料是影响无刷直流电机性能最重要的因素之一。

I plant for many years engaged in the hollow cup permanent magnet DC motor of development, production and sales.

我厂多年来从事空心杯永磁直流电机的开发、生产和销售。

The rise of temperature is a key factor to the performance of permanent magnet brushless DC motor.

摘 要：温升是影响永磁无刷直流电动机运行性能的一个关键因素。

A structure of miniature permanent magnet linear DC motor was presented in this paper.

介绍了一种微小型永磁直流直线电动机的结构，优化了结构参数，加工出样机并进行了试验分析。

A novel HVDC supplementary controller based on Phasor Measurement Unit is proposed.

3提出了一种基于同步相量测量单元的直流附加控制器。

This paper advances the circuits of step motor plane rectangular coordinates automatic position system controlled by single chip computer.

设计出以步进电动机拖动为核心的平面直角自动定位系统电路，其中包括单片机输出接口线路、光电耦合线路、驱动线路、直流电压源电路等。

Another feature of electrolytic CAPACITOR s, both aluminium and tantalum, is that most of them are polarized and require a DC bias for correct operation - a reverse bias may do damage and will certainly increase leakage (unpolarized electrolytic CAPACITOR s, which may be biased in either direction, do exist but they are uncommon, and considerably larger than the polarized variety).

电解电容还有一个特点，那就是绝大多数都是有极性的，其两端必须施加直流电压才能正常工作。如果极性接反，电容就可能损坏，其漏电流也会增加。无极性电解电容虽然已经问世，但是相比之下不常用，而且外形尺寸也比有极性电容大。

Another feature of electrolytic capacitors, both aluminium and tantalum, is that most of them are polarized and require a DC bias for correct operation - a reverse bias may do damage and will certainly increase leakage (unpolarized electrolytic capacitors, which may be biased in either direction, do exist but they are uncommon, and considerably larger than the polarized variety).

电解电容还有一个特点，那就是绝大多数都是有极性的，其两端必须施加直流电压才能正常工作。如果极性接反，电容就可能损坏，其漏电流也会增加。无极性电解电容虽然已经问世，但是相比之下不常用，而且外形尺寸也比有极性电容大。

To speed up the fault diagnosis of electrical equipment analog PCB circuit, this paper uses the principle of DC fault dictionary and the areafault location method, improves the com- ponent model and circuit description program, thus studies analog PCB automatic fault diagnosis system.

为提高电子装备模拟印制板电路故障诊断的速度，本文使用直流故障字典法原理，运用区域性故障定位方法，改进器件模型和电路描述程序，设计了模拟印制板电路故障自动诊断系统。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。