我想問下,如果有一架小木車,what can be done to the wheel , so the car
can move faster?
究竟係應該加潤滑油定係例如加沙紙等增加佢的摩擦力?
有d同學就話加潤滑油係錯,加摩擦力先對,因為有摩擦力易d行,岩唔岩?
收錄日期: 2021-04-25 23:15:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081128000051KK00760