Asifa farzana
# 42: Now I learned how it work , thanks.
哦，原来风扇的电机已经带动齿轮运转了。然后它只是连接到另一个齿轮上旋转而已！我明白了。
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评论 4
- BLK
That's interesting. Never really thought how it rotated.
- Jay
Even I hadn't thought about it as well! It is interesting
