更新1:
theoretical tension is calculated by Mg where M is the mass of screw nut
theoretical tension is calculated by Mg where M is the mass of screw nut
收錄日期: 2021-04-25 23:23:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091115000051KK01456