本文分析了电阻加热炉的数学模型，说明了常规控制器不能达到高控制精度的原因。
This paper analyzes the mathematical model of a resistance heating furnace, showing that a normal controller is unable to reach a high control accuracy.
本文应用叠加原理分析运算放大器的开环输入电阻对反相比例放大运算精度的影响。
This paper analyses operation accuracy that is influenced by the open input resistance of operation amplifier by means of superposition theorem.
对补偿电阻器的原理，结构进行了分析；并着重介绍了补偿电阻器在高精度传感器中的应用。
The principle and structure of compensating resistor are analyzed. Application of compensating resistor are mainly described in transducers of high accuracy.
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