科学计数法用英语怎么读比如说 7乘10的负7次方 用英语怎么读

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科学计数法用英语怎么读
比如说 7乘10的负7次方 用英语怎么读

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 seven
OR
seven times ten to the negative seventh power

7 by 10 of negative and power