交流电压

There are 2 kind of AC voltmeter.

有两种类型的交流电压表。

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。

Part 1 : capacitive type to be used for voltages exceeding 1 kV a.c.

第1部分：超过1KV的交流电压用的电容类型

Part One Research on Measuring of Resistive Current Passing Through XLPE Cable With Applying AC Voltage: By many tests,It is found that mains frequency is not sensitive to the mechanical fault of power cable main insulation.Accordingly,a new method that the fault of power cable main insulation is measured by measuring the resistance component of leakage current is put forward.

第一部分对XLPE 电力电缆施加工频交流电压时阻性电流的检测研究：通过大量的试验发现工频交流耐压试验对电力电缆主绝缘的机械损伤不灵敏，从而提出了通过检测泄漏电流的阻性分量来检测电力电缆主绝缘缺陷的新方法。

One explanation of 'smoothing' is that the capacitor provides a low impedance path to the AC component of the output, reducing the AC voltage across, and AC current through, the resistive load.

对"滤波"的一种解释是电容对输出AC元件提供了低阻抗路径，减小了电阻负载上通过的交流电压和交流电流。

The method is in a constant exchange between the squirrel cage induction motor access SCR as AC voltage controller.

该方法就是在恒定交流鼠笼异步电动机之间接入晶闸管作为交流电压控制器。

The methodis in a constant exchange between the squirrel cage induction motoraccess SCR as AC voltage controller.

该方法就是在恒定交流鼠笼异步电动机之间接入晶闸管作为交流电压控制器。

The dimmer control circuit comprises: three-end bidirectional controllable silicon switch element, comprising grid and turned on by trigger signal of the grid, connecting to AC power supply through lamp load; and a first variable resistor, possessing adjustable resistance and regulating lamp brightness by following modes: changing resistance value of the first variable resistor, changing phase of the trigger signal corresponding to AC voltage waveform, prolonging or shortening turning-on time bucket of three-end bidirectional controllable silicon switch element, thereby changing current provided to the lamp load.

一种调光器及调光控制电路，该调光控制电路包括：三端双向可控硅开关元件，其通过灯负载连接到交流电源，其中，三端双向可控硅开关元件具有栅极，并且由输入到所述栅极的触发信号开启；以及第一可变电阻器，其具有可调节的电阻值，其中，通过以下方式来调节灯负载的亮度：改变第一可变电阻器的电阻值，改变所述触发信号相对于交流电压波形的相位，延长或缩短所述三端双向可控硅开关元件的开启时间段，从而改变了提供给所述灯负载的电流。

One explanation of 'smoothing' is that the capacitor provides a low impedance path to the AC component of the output, reducing the AC voltage across, and AC current through, the resistive load.

对&滤波&的一种解释是电容对输出AC元件提供了低阻抗路径，减小了电阻负载上通过的交流电压和交流电流。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。