做PCB设计的朋友，是不是总被反复切换图层、调整视图、测量距离这些琐事耽误进度？明明思路很清晰，却要在菜单里翻来翻去浪费时间？今天给大家整理了 Altium Designer 软件的9个核心快捷键，练熟之后直接让设计效率翻倍，项目周期砍半不是梦！ 1. VF：一键满 ...

Christmas Eve found President Donald Trump in good humor, sitting in his Mar-a-Lago home and chatting with children on the phone about Santa Claus’ whereabouts as NORAD tracked his sleigh. “Nice, ...