橡皮擦如何消除铅笔痕迹
发布时间：2025-04-22 17:11:47 作者： 来源：24csgo开箱网 【 字体：大 中 小 】
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>>>>小编倾情推荐：庄园小课堂往期答案大放送
>>>>不容错过：《支付宝》2021年7月蚂蚁庄园答案全解析
支付宝蚂蚁庄园7月18日答案2021
题目：为什么橡皮擦能擦掉铅笔字？
答案：橡皮吸附笔芯粉末
橡皮擦是一种用橡胶材料做成的物质，通过与浮石粉、氧化铁、植物油、和其他物质等混合起来，用工艺制作而成，其中浮石粉是经过研磨过的。铅笔笔芯则是一种由石墨进行制作而成的物质，石墨是矿物质中最柔软的一种。铅笔字可以被橡皮擦擦掉的关键原因为铅笔上的石墨经过摩擦作用留在了纸上，橡皮擦擦字时摩擦掉的橡皮粉把石墨一起卷走了的结果。
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以上就是本次三大妈24开箱网小编为大家带来的蚂蚁庄园小课堂2021年7月18日的问题答案，小编会在每天为大家更新最新的庄园小课堂问答，感兴趣的玩家可以关注庄园小课堂往期答案汇总页面。
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