查询词典 alternating current

Alternating current reverse from negative to positive about 60 times a second .

交流电由负到正一秒钟大约变换六十次。

A coil so wound as to offer a retarding or self inductance effect to an alternating current.

线圈受到打击后对交流电流产生延迟或自感效应。

According to self-induction characteristic of the coils in alternating circuit, a kind of lamp switch that can eliminate the surge current at the moment of the incandescent lamp being started is produced.

运用交流电路中线圈的自感特性，制成一种白炽灯的延寿节电开关，它可消除白炽灯起动瞬间的浪涌电流，延长白炽灯寿命，节约用电

Considering the three different moving processes, complete mathematic model of controlled system that includes velocity loop of alternating current servomotor, is established.

针对三个不同的运动阶段，建立了包含交流伺服电机速度环的被控系统的完整的数学模型。

Under this direction, we developed a kind of inverter power supply, and the parameters are as follows:(1)the input of three-phase alternating current;(2)the output of sinusoidal wave;(3)the frequency of output: 5-25 kHz, which can be adjusted;(4)the voltage of output: 5-20 kV, which can be adjusted.

根据这个特点，我们研制了一种高频、高压的大功率逆变电源，参数如下：(1)三相交流输入；(2)输出正弦波；(3)输出频率：5～25kHz，可调；(4)输出电压5～20kV，可调。

To control speeds for a typical alternating current motor, we usually take control variables (to change voltage and frequency of the stator power supply) from the stator side in an electric motor, which is also the only way for squirrel-cage asynchronous motor with rotor in a short-circuit state.

对于一般交流电动机的调速，我们都是从电动机的定子侧引入控制变量（改变定子供电电压、频率）来实现的，这对于转子处于短路状态的交流鼠笼型转子异步电动机是唯一途径。

To control speeds for a typical alternating current motor we usually take control variables (to change voltage and frequency of the stator power supply) from the stator side in an electric motor which is also the only way for squirrel-cage asynchronous motor with rotor in a short-circuit state.

对于一般交流电动机的调速，我们都是从电动机的定子侧引入控制变量（改变定子供电电压、频率）来实现的，这对于转子处于短路状态的交。。。

In this paper, the early hydration processes of cement pastes including various contents of coal stone were studied by alternating current impedance spectroscopy.

摘要采用交流阻抗谱方法对掺加不同量煤矸石的水泥浆体的早期水化过程进行了研究。

A circuit for detecting the phase angle of a three-phase alternating current includes a plurality of low-pass filters, a plurality of multipliers, a subtracter, a loop filter, an integrator, and a phase delay compensator installed between the subtracter and the loop filter, for compensating for phase delay of the input signal caused by the low-pass filters.

一种检测三相交流电相位角的电路，包括：若干个低通滤波器；若干个乘法器；一个减法器；一个环路滤波器；一个积分器；和安装在减法器与环路滤波器之间的相位延迟补偿器。

Uses the 89S51 monolithic integrated circuit to take the system the control core, the crystal thyratron zero has triggered the way realization alternating current supply the soft start, finally uses the multi-purpose board to build the overall system electric circuit.

采用89S51单片机作为系统的控制核心，晶闸管的过零触发方式实现交流电源的软启动，最终采用万用板来搭建整个系统电路。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切