[考試] 剛體運動學
請教各位大大
向量的正負，就舉此題來說…
要怎麼看那-2k呢？？
http://i.imgur.com/4RfOidm.jpg
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這板的用意不就是有要給人發問的功用嗎
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※ 編輯: enger2567 (223.142.19.211), 06/24/2015 08:41:26
※ 編輯: enger2567 (223.142.19.211), 06/24/2015 08:42:12
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