现在的任务交流电路中的定位快速和容易。
The task of locating AC circuits is now made quick and easy.
交流电路中的有用功率还取决于该电路中的电流和电压。
The useful power in ac circuit also depends on the current and voltage in the circuit.
J 0414型交流毫安表适用于中学、中专等实验室测量交流电路中的电流强度。
AC Milliammeter, Model J0414, is suitable for the laboratories of middle schools and polytechnic schools to measure current intensity in the AC circuit.
由功率四边形进一步确立了非正弦交流电路中的电流四边形和导纳四边形，以及它们和功率四边形的相似关系。
Further, the current quadrilateral and admittance quadrilateral, as well as their similarity to the power quadrilateral in non-sinusoidal alternating-current circuits were derived.
在交流电路中，电流的幅度是连续不断地变化的，因此相位和时间的概念变得十分重要了。
In ac circuits, the current amplitude changes continuously that the concept of phase or time becomes very important.
伏特量交流电路中电压与电流的有效值以及电流与电压之间相位角的余弦之乘积。
The product of the effective values of the voltage and current with the cosine of the phase Angle between current and voltage in an alternating-current circuit.
用途：可广泛用于各种电气设备和电子仪器的直流或交流电路中作分流或负载电阻等。
Purpose: it can be used as shunt and load resistor in DC or ac circuit of electric facility and electron instrument widely.
在直流电路中这并没有影响，但对交流电路却有反作用，因为感应系数使该器件对频率的变化很敏感。
This does not affect performance in DC circuits , but can have an adverse effect in AC circuits because inductance renders the device sensitive to changes in frequency. disadvantages.
在直流电路中这并没有影响，但对交流电路却有反作用，因为感应系数使该器件对频率的变化很敏感。
This does not affect performance in DC circuits , but can have an adverse effect in AC circuits because inductance renders the device sensitive to changes in frequency. disadvantages.
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