1 附录二 外文原文和翻译 shafts、couplings and rolling contact bearings key words: shafts、couplings、bearings Virtually all machines contain shafts.The most common shape for shafts is circular and the cross section can be either solid or hollow (hollow shafts can result in weight saving...

时间:2024-12-07 13:56栏目:行业资料