原子笔
原子笔是一種现代书写工具，利用笔杆末端个一粒珠子来分配油墨，让书写者好覅像用钢笔一样要蘸墨水。渠个工作原理就是笔芯来拉大气压力搭油墨重力个双重作用下头，油墨从油管流到笔头个球珠座里，再黏附到球珠上。书写辰光，黏拉球珠上个油墨跟牢球珠来拉书写面上个滚动，再黏拉书写面上形成字迹，达到书写个目的。
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