看链接:链接重组部分
推荐:https://jingyan.baidu.com/article/d169e1864cc54e436611d832.html
链接一:https://blog.csdn.net/jcyouhun/article/details/93617464
官方链接:http://help.solidworks.com/2018/Chinese-simplified/SolidWorks/sldworks/t_Editing_a_Joined_Part.htm