In this paper, math model is studied based on physics theory of PV cell, and the influence of series resistor Rs and parallel resistor Rsh on PV cell characteristic is analyzed.

针对光伏电池研究了基于物理机制的数学模型，分析了串联电阻和并联电阻对光伏电池特性的影响。

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The characteristics of the RS-11 type carbon resistor were measured using the above-mentioned cryostat. The results indicate that it can be used as a thermometer at ultra-low temperatures.

用这套装置测量了国产RS-11型实芯碳电阻的极低温电阻-温度特性，结果表明，不同室温名义阻值的RS-11型碳电阻可作为不同极低温温区的电阻温度计使用。

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