基本解釋[能源科學技術]極限熱環(huán)境專業(yè)釋義能源科學技術極限熱環(huán)境Heat dissipation mode in an infinite space and extreme thermal environment is numerically studied and optimized for a PCB through improving the structure of a sun shield,modifying the layout of the PCB,and setting an insulation cavity.通過改進太陽罩結搆、改變PCB安裝形式、設置隔熱等方式,對大功率PCB在大空間極限熱環(huán)境下的散熱方式進行了優(yōu)化和數值模擬。