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1、長度單位換算:1千米=1000米1米=10分米=100釐米1釐米=10毫米1毫米=1000微米m--米dm--分米cm--釐米mm--毫米2、時間單位換算:1年=365天,1天=24h,1h=60min,1min=60s3、速度單位換算:1m/s=3.6km/h4、質量組織換算…
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