12mm²是多少厘米?

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12mm²是多少厘米?12mm²是多少厘米?12mm²是多少厘米?12mm²=12/100=0.12cm²

12mm²是多少厘米?
12mm²是多少厘米?

12mm²是多少厘米?
12mm²=12/100=0.12cm²