12纳米等于几米?

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12纳米等于几米?12纳米等于几米?12纳米等于几米?1纳米=10^（-9）12纳米=12*10^（-9）米=1.2*10^（-8）米

12纳米等于几米?
12纳米等于几米?

12纳米等于几米?
1纳米=10^（-9）
12纳米=12*10^（-9）米=1.2*10^（-8）米

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