词汇	focussing lens
释义	focussing lens 调焦透镜
随便看	radiation floor heating radiation flow radiation flux radiation flux density radiation flux divergence meter radiation fluxes radiation fluxmeter radiation fog radiation force radiation forcer balance radiation forcing RADIATION for initiating polymerisation radiation formula radiation-free glass radiation free processing radiation free time radiation freeze radiation frequence radiation frequency radiation frequency spectrum radiation fresh radiation from fission radiation from machine radiation from sea surface radiation from the sea surface