善行繁
added Category:470 製造總論 using HotCat
13:10
+31
创建页面，内容为“File:机电.jpg|缩略图|右|[https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1594885979880&di=ee4beb3fecba2616ea5d6d19148bb12e&imgtype=0&src=…”
13:08
+14,804