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20cm大概是多长
更新时间: 2021-12-13 09:23:48  

大概为一张A4纸的宽度。在直尺上,1厘米的长度是两个相邻数字之间距离。故20cm的长度为:直尺上数字0”到数字20”距离的长度。厘米是一个长度计量单位,等于一米的百分之一。长度单位,英语符号即缩写为:cm。1cm(厘米)=10mm(毫米)=0.1dm(分米)=0.01m(米)。

关键词: 20cm 大概

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