搜索优化
English
搜索
Copilot
图片
视频
地图
资讯
购物
更多
航班
旅游
酒店
房地产
笔记本
Top stories
Sports
U.S.
Local
World
Science
Technology
Entertainment
Business
More
Politics
过去 7 天
时间不限
过去 1 小时
过去 24 小时
过去 30 天
按相关度排序
按时间排序
腾讯网
21 小时
分岔理论奠基人霍普夫和他对现代数学的深刻影响
霍普夫在遍历理论、偏微分方程、积分方程、流体动力学和微分几何方面都有重要贡献。他在1927年发表的极大值原理是椭圆偏微分方程理论中最重要的技术之一。除了上面提到的维纳-霍普夫方法之外,他对拟线性双曲方程的处理提供了研究守恒定律的第一个现代方法。他证明 ...
BMJ
1 天
Imaging research results from the Osteoarthritis Initiative (OAI): a review and lessons ...
The Osteoarthritis Initiative (OAI) is a multicentre, prospective, observational, cohort study of knee osteoarthritis (OA) that began recruitment in 2004. The OAI provides public access to clinical ...
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
Congress certifies victory
Trudeau steps down
Effects of sugary drinks
Wyoming avalanche
Social Security bill signed
Rapper sued for assault
Character actress dies at 96
Cancels in-person classes
Former Scientologist dies
'We cannot forget'
Workplace misconduct suit
US factory orders fall
Seeks stay of sentencing
Documentary in the works
Wins Walter Payton Award
Atomic bomb survivor dies
Nippon, US Steel file suit
Alabama wins Miss America
Tuna sells for $1.3 million
Winter blast grips US
Biden bans offshore drilling
US to ease Syria aid rules
Fed's Barr to step down
France’s ex-pres faces trial
Brazilian nun oldest at 117
Lead US to United Cup title
Disney inks deal to merge
Golden Globes 2025 winners
Unit sued by CFPB
Jaguars fire coach
UKR launches new offensive
Suspect visited city twice?
Patriots fire coach Mayo
Former Greek PM dies
反馈