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历史上的今天
正是基于此,与传统LEDSMD贴片式封装和大功率封装相比,板上芯片(COB)集成封装技术将多颗LED芯片直接封装在金属基印刷电路板上,作为一个照明模块通过基板直接散热,不仅能减少支架的制造工艺及其成本,而且还具有减少热阻的散热优势,因此成为照明 ...
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今日热点
Florida Sen. Thompson dies
Quakes shake Bay Area
TikTok back in app stores
Signs FL immigration laws
Igloo recalls coolers
Credit card debt hits $1.21T
Infant mortality rates study
Collides with merchant ship
Former Arkansas gov. dies
Musk's role challenged
Emanuel joins CNN
Foreign aid freeze lift order
Alleged shooting plot arrest
Plane returns to Washington
Creates MAHA commission
US approves extradition
Detected in veterinarians
WH blocks AP reporter
119 deported to Panama
Jets split with Rodgers
Top NY prosecutor resigns
Confirmed as HHS secretary
Resign from Kennedy Center
PA gov. sues Trump admin
Passes Senate panel vote
Confirmed as USDA head
US wholesale prices rose
Texas judge fines NY doctor
Federal workers' mass layoff
Flanagan to run for Senate
Mortgage rates dip
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