You are told by this expression that current is proportional to the applied voltage.
这一表达方式告诉你：电流与外加电压成正比。
This paper describes the conception, principle, derivation of mathematical expression concerned and the calculation method of modified proportional factor method.
本文叙述修正比例常数法的概念、原理、有关数学表达式的推导及计算方法。
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