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伏安特性曲线直观形象地反映了电流随电压的变化规律,运用该图象分析讨论某些物理问题不仅简单易行,而且可以深刻的理解物理概念和物理规律.
The volt-ampere characteristic curve reflects the law of current with voltage intuitively and vividly. Using this image analysis to discuss some physical problems is not only simple and easy, but also can deeply understand the physical concepts and physical laws.