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帶方向盤的履帶拖拉機(jī)是如何轉(zhuǎn)向的,? |
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點(diǎn)評(píng)
原來(lái)如此
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點(diǎn)評(píng)
是的。履帶式的往往沒(méi)差速器,,所以在泥地里才能行走,。
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