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
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
5 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 ...
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
'NCIS: LA' actress dies at 45
R&B legend dies at 72
Injured leaving Venezuela?
Disbarred in Connecticut
Luminar files for bankruptcy
BU shooting victims ID'd
Trump sues BBC
Today in history: 1995
Person of interest released
Jets fire DC Steve Wilks
Spotify suffers outages
Trump flags illicit fentanyl
Hires former CDC leaders
US offers security guarantee
FTC, states file amended suit
Brian Walshe found guilty
FDA warns retailers
Targets Russia's shadow fleet
Trial begins for WI judge
Simmons' home burglarized
Frozen sliders recalled
Soldiers killed in Syria ID’d
Flash flood warning in Seattle
SF cable car incident
Detroit house fire kills 3
Steve Taneyhill dies
Bedard placed on IR
‘General Hospital’ star dies
Sentenced to 30 years
Returns as PGA Tour sponsor
MRI confirms torn ACL
Takes $19.5 billion hit
OKs Enhertu for breast cancer
反馈