我告诉你换算关系,自己算
1km =1000m =10^3m
1dm =0.1m =10^-1m
1cm =0.01m =10^-2m
1mm =0.001m =10^-3m
1um =0.001mm =10^-6m
1nm =0.001um =10^-9m
8814.6dm= um?0.000037km= dm?687um= 0.0096nm= cm?37690um= km?128cm=m?236m=dm?
8814.6dm= um?0.000037km= dm?687um= 0.0096nm= cm?37690um= km?128cm=m?236m=dm?
物理人气：888 ℃时间：2019-08-14 01:20:29
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