• 1. field effect variable: 场效应变量

• 1.Both nonreciprocal birefringent effect and variable polarization effect of microwave ferrite in the symmetrical four-pole magnetized field are discussed in the light of coupling-wave theory.
  本文用耦合波理论处理了对称四磁极磁化情况下，微波铁氧体的非互易双折射效应和变极化效应。
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• 2.On the grounds of the pinch-off voltage, the cut-off point of variable resistance area and saturation area can be fixed, so the field effect tube can reliably work in the saturation area.
  根据夹断电压能确定可变电阻区与饱和区的分界点，使场效应管可靠地工作在饱和区的原理。
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• 3.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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