我見tensile strength同compressive strength既單位都係psi....
係唔係所有strength既unit??
仲有, MPa又是什麼unit?
收錄日期: 2021-04-16 15:58:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070110000051KK04652