自制便携式棉球机中国人民解放军第９２医院吴洁杨学会医疗工作中经常使用棉球，我们自行设计制作了小型便携式棉球机仅需经费１００元左右。经使用证明，效果满意。现将本机主要技术原理和制作方法介绍如下。一、材料２０Ｗ单相电容运转电机一只，１４００ｒｐｍ转动轴承... Self-made portable cotton ball machine The 92nd Hospital of the Chinese People’s Liberation Army Wu Jieyang Society often uses cotton balls for medical work. We have designed and manufactured a small portable cotton ball machine for only about 100 yuan. The use of proof, the effect is satisfactory. Now the main technical principles and production methods of this machine are introduced as follows. First, material 20W single-phase capacitor running motor, 1400rpm rotating bearing...