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米和分米换算
更新时间: 2020-09-06 00:00:00  

1、分米是长度的公制单位之一,1分米相当于1米的十分之一。十厘米等于一分米,十分米等于一米;

2、“米”的定义起源于法国。1米的长度最初定义为通过巴黎的子午线上从地球赤道到北极点的距离的千万分之一,并与随后确定了国际米原器。随着人们对度量衡学的认识加深,米的长度的定义几经修改。1983年起,米的长度被定义为“光在真空中于两亿九千九百七十九万两千四百五十八分之一秒内行进的距离”。

关键词: 分米 换算

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