English
全部
搜索
图片
视频
地图
资讯
Copilot
更多
购物
航班
旅游
笔记本
Top stories
冬季运动会
Sports
U.S.
Local
World
Science
Technology
Entertainment
Business
More
Politics
时间不限
过去 1 小时
过去 24 小时
过去 7 天
过去 30 天
最佳匹配
最新
电子工程专辑
6 年
干货 | PCB Layout 跳坑指南——PCB走线角度选择到底该不该90°?
现在但凡打开SoC原厂的PCB Layout Guide,都会提及到高速信号的走线的拐角角度问题,都会说高速信号不要以直角走线,要以45度角走线,并且会说走圆弧会比45度拐角更好。 事实是不是这样?PCB走线角度该怎样设置,是走45度好还是走圆弧好?90度直角走线到底行不行 ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果
今日热点
US beats Canada in final
Former WNBA All-Star dies
Faces murder trial
Drug lord 'El Mencho' killed
BAFTAs host, BBC apologize
NASA delays Moon mission
PreCheck still operational
Hundreds protest in Verona
Man killed by Secret Service
Former Vikings DB dies
ICC to hold pre-trial hearing
Claims WBC welterweight title
US sailor medically evacuated
Major winter storm in US
To buy US biotech Arcellx
Virginia shooting
FR to summon US envoy
Re-elected to lead party
NFL wide receiver dies
Trump pulls endorsement
Dutch govt. sworn in
Salsa musician dies
Bomb explosions in Ukraine
Nepal bus accident
BAFTA Film Awards winners
Earthquake hits Malaysia
Iran, US to hold talks
Leaves game w/ back injury
HK court rejects appeal
India-US trade talks delayed
反馈