4.2纳米等于多少厘米?

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4.2纳米等于多少厘米?4.2纳米等于多少厘米?4.2纳米等于多少厘米?4.2纳米等于4.2*10-7厘米

4.2纳米等于多少厘米?
4.2纳米等于多少厘米?

4.2纳米等于多少厘米?
4.2纳米等于
4.2*10-7 厘米