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大头的陈小晶
seven multipled by ten to the power of minus seven 7 * (10^(minus 7)) = 7.0 × 10-7 seven multipled by ten to the power of negative sevenORseven times ten to the negative seventh power
幸福顺延
e Mathematics The base of the natural system of logarithms, having a numerical value of approximately 2.7183.e 【数学】 自然对数体系中的底数，其数值约为2.7183
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