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为什么三菱的笔不经摔
更新时间: 2020-09-19 00:00:00  

笔尖结构不同。中性笔笔尖都是颗珠子。一般的笔笔尖的珠子是陷在笔尖里的,三菱宣称自己的笔尖的珠子是由特殊结构托着的,是半悬浮的。这样的好处是更顺滑,坏处是笔尖一摔珠子就会陷进去,所以不耐摔。

关键词: 为什么

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