The output power mechanism of a separately excited DC motor can be equivalent to a variable resistance, which is parallel with the armature winding of the motor.

若将他励直流电动机输出功率的机理等效为一个与电动机电枢绕组并联的可变电阻，可以得到他励直流电动机可变电阻型等效电路图。

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The output parameters such as beam divergence angle in far-field output power of high power solid state lasers are variable due to thermal effect of optical pumping.

由于光泵浦热效应，高功率固体激光器的输出参数如光束远场发散角、输出功率等会发生变化。

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The power can output several kinds of welding current such as variable polarity square wave AC, DC and pulse current etc.

该电源可实现变极性方波交流、直流、脉冲电流等多种输出。

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