用途：用于直流或低频交流电路中。
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.
“感抗”这个术语只适用于交流电路，其测量单位为欧姆。
The term IMPEDANCE is applicable only to AC circuits. Its unit of measurement is the ohm.
本实用新型系用于控制交流电路通、断的接触器。
The utility model relates to a contactor used for controlling the switching on and the switching off of an ac circuit.
文章介绍一个用节点分析法计算正弦交流电路的程序。
A program based on the node analysis method which can be used to compute Sine AC-Circuit is described.
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.
该插头插座可供连接电子设备内组件间的直流或交流电路。
These connectors are used for the connection of DC Circuit or AC Circuit of the module of electronic equipments.
要注意，代文宁定理不仅适用于直流电路，也适用于交流电路。
It is to be noted that Thevenin s theorem applies to AC as well as to DC circuits.
谐波理论分析对于非正弦交流电路的研究具有重要的理论和实际意义。
The analysis of modulation wave theory has very important theoretical and actual meaning for studying non sine alternating current.
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.
不过，在分析交流电路时，重要的是不仅要考虑相量的幅值，还要考虑相量的方向。
However, when analyzing AC circuit, it is important to consider the magnitude as well as the direction of phasor quantities.
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.
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.
在交流电路中常采用空气阻尼型时间继电器，它是利用空气通过小孔节流的原理来获得延时动作的。
Often in ac circuit by air damping model time relay, it is to use the principle of air through orifices throttling to obtain delay action.
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.
早期在交流电路中常采用空气阻尼型时间继电器，它是利用空气通过小孔节流的原理来获得延时动作的。
Early in the circuit often USES air damping model time relay, it is to use the principle of air through orifices throttling to obtain delay action.
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.
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.
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