交流

The bidirectional thyristor and the heater are connected in series of the alternating circuit of 220V, 50Hz.

双向可控硅管和加热丝串接在交流220V、50Hz市电回路。

Whereas if the contacts are in series with the alternating circuit, due to the passing zero property of voltage, we must evaluate the condition of contacts according to voltage value.

但当触头接入交流电路中时，由于电压有过零的特征，所以要根据电压有效值来判断触头是打开还是闭合。

Micro-voltmeter Capable of measuring either alternating or direct current voltage within an accuracy of 2%.

能测量交流或直流电压在精确度2%之内的微型伏特表。

An alternating voltage between two points A and B,determined along a specified path 1,periodically changes sign,so that if it is assumed to be positive in the direction from A to B,it will be negative in the direction from B to A at the same instant of time.

两点之间的交流电压A和B，沿着指定的路径1中确定的，定期的变化迹象，所以，如果它被假定为积极的从A到B，这将是在消极的方向从B到A的方向在time。

This is adjusted being able to care for loads power condition only but is disregards the alternating voltage extent size, could be considered a way to adjust the duty cycle to achieve the purpose of adjustment of power.

这种调整可以只关心负载功率情况而不管交流电压的幅度大小，可以考虑采用调整占空比的方式达到调整功率的目的。

First, this paper briefly presented the construction of the software and hardware system of the ATE8000- 1 integrated test stand, and the monitoring circuit designs of alternating current power supply used voltage for this test stand.

文中首先简要介绍了ATE8000-1综合测试台系统的软硬件结构和总体方案，设计出了该测试台交流电源输出电压的监控电路。

Data communication ; IDC Internet data center ; Alternating UPS ; High voltage direct current UPS power supply system

数据通信； IDC互联网数据中心；交流UPS供电系统；高压直流UPS供电系统

The quality of service can be measured by service continuity or reliability, uniformity of voltage at the proper level, proper and uniform frequency of the alternating voltage.

供电质量可由供电连续性或供电可靠性，在标准电压等级下的电压均等性，交流电压频率的正确不变性来度量。

When the cables use in alternating current system, rated voltage of cables should be at least equal the rated voltage of the system; When the cables use in direct current system,rated voltage should be not greater than 1.5 times of the rated voltage of the cables .

当电缆使用于交流系统时，电缆的额定电压至少应等于该系统的额定电压；当电缆使用地直流系统时，该系统的额定电压应不大于电缆额定电压的1.5倍。

A cycle is one complete reversal of an alternating current or voltage from zero to a positive maximum to zero again and then from zero to a negative maximum to zero again. The number of cycles per second is the frequency.

周期周期是指交流电流或电压从零到正最大值再到零，然后从零到负最大值再到零这样一个往复的过程；而频率则是指每秒可完成的周期数。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。