4575| 15
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一個(gè)小電機(jī),用什么傳動(dòng)方式能使20個(gè)距離相等(大概30mm)的小輪同時(shí)轉(zhuǎn)動(dòng) |
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點(diǎn)評
可以用圓帶方案試一下
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