组合夹具是一种由一套预先制造成的标准元件组装成的夹具。()
√
上一篇 液体即能承受拉力也能承受剪切力。()
下一篇 Which of the following objects was an important woodworking tool used by early American craftsmen?
版权所有 (c)2021-2022 MSHXW.COM
ICP备案号:晋ICP备2021003244-6号