11034| 31
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這個機(jī)構(gòu)的運動軌跡為何是D字形的,,而 不是圓形的,? |
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點評
嘗試了集中不通組合的計算,發(fā)現(xiàn)很難達(dá)到D,,最多就是個O,。數(shù)模太復(fù)雜了,未知數(shù)太多,,已經(jīng)算得我不想繼續(xù)了,。結(jié)果是,只能認(rèn)為是類似D,,但絕對不是圓,。
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