acfun.tv
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一大波机械原理动态图:看懂你就是高级工程师! - AcFun弹幕视频网 - 认真你就输啦 ...
acfun.tv
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一大波机械原理动态图:看懂你就是高级工程师! - AcFun弹幕视频网 - 认真你就输啦 ...
1
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2b81db91e6380525deda85bcf7eea82fb9bbb36e23e66...
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medium (47)
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medium (53)
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Linear motion from eccentric shaft
haha.mx
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地球仪是这样做出来的~表面凹凸不平的地形是由凹凸不平的模具所压!
3