oolipp 發(fā)表于 2019-3-8 15:39 8 }7 ~7 d# k) _. w/ _+ q$ P還有我覺得滾動(dòng)摩擦系數(shù)我查不出來(lái),0.01我覺得不對(duì),,有知道的嗎,?