While two contacts supply a constant current, the other two contacts measure the voltage drop across a portion of the sample.
其中两个探针提供恒定的电流，而另外两个探针测量一部分样品上的电压降。
It keeps the voltage drop across the pass transistor more nearly constant, improving its performance.
他使调整三极管上的电压降接近稳定，改进了他的性能。
In this circuit, some measures are adopted, such as making constant current source as a rectifying load. It makes the voltage drop of the rectifying diode maintain a constance.
该电路采取以恒流源为整流负载等有关措施，使整流二极管的正向导通压降为一常数。
In this circuit, some measures are adopted, such as making constant current source as a rectifying load. It makes the voltage drop of the rectifying diode maintain a constance.
该电路采取以恒流源为整流负载等有关措施，使整流二极管的正向导通压降为一常数。
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