我形容得唔好...
即係旁邊一睇
前面個車轆中間一定係凸(或者平)後面一定係凹
但係小型車(e.g.私傢車, 的士)會兩個都係凸
點解係咁?
我開頭以為d車轆係亂咁裝入去
但係睇到架架大車都係咁...
收錄日期: 2021-04-22 23:34:46
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080126000051KK02905