25分米=多少微米?880毫米=多少微米?用科学计数法好吗?

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25分米=多少微米?880毫米=多少微米?用科学计数法好吗?

25分米=多少微米?880毫米=多少微米?用科学计数法好吗?
25分米=多少微米?880毫米=多少微米?
用科学计数法好吗?

25分米=多少微米?880毫米=多少微米?用科学计数法好吗?
2500000微米,880000微米