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28 天
你知道吗?一头大象能制造出115张A4纸的惊人事实
一头大象与115张A4纸 大象的粪便 ... 而这些纤维,恰好能够转化为纸张的原料之一。通过适当的工艺处理,大象的粪便能够被转化成可用的纸张。
来自MSN
10 个月
一张A4纸对折103次,直接超过930亿光年,整个宇宙都装不下吗?
现在我们将这张A4纸沿着边缘开始对折,当对折到第四次的时候,纸张面积变成了原来的十六分之一。当对折到第6次的时候,面积又变成了原来的 ...
来自MSN
2 个月
为什么A4纸对折很难超过7次?
这是一张普通的A4纸,对折一次厚度翻倍,面积减半。再对折一次,厚度再次翻倍,面积再次减半。以此类推,你能够对折多少次? A4纸说大不大 ...
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