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
生物通
2 个月
一种基于宽带蓝光Na-β"-Al?O?:Eu2?, Ce3?磷光体的白光LED(WLED),该磷光 ...
宽谱带Na-β"-Al?O?:Eu2?,0.08Ce3?荧光材料通过Eu2?双位点占据实现470nm和500nm双峰发射(FWHM 140nm),热稳定性优异(95.1%@448K),用于CIE 1931色坐标(0.32,0.35)的全光谱WLED。 发光二极管(LED)的发明和应用将照明领域带入了一个新时代。与传统光源相比,LED灯体积更小 ...
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
Democrats, WH reach deal
On ICE operations in MN
US to open Venezuela airspace
Allen undergoes surgery
Wheel falls off plane
Join National Film Registry
Hosts Cabinet meeting
Enters CA governor's race
DOJ files federal charges
US life expectancy report
Chinese man granted asylum
US trade deficit widens
Shooting in Canada
Shirley Raines dies
US cricket star suspended
Executes 11 members of gang
Vietnam, EU upgrade ties
Human trafficking suspect shot
Chiles granted appeal
Judge cancels court hearing
Dunn announces retirement
Drops anti-ICE protest song
Reaches 4th straight AO final
ISR returns Palestinian bodies
Would-be assassin sentenced
Weekly jobless claims fall
Top official resigns
Suit against coach dismissed
ICE ends Maine surge
Man tried to free Mangione
Sentenced to 20 years
反馈