optical sun光学太阳opticaladj.视觉的；光学的optical magnification光学放大optical sensitization光学增感optical reflectometer光学反射计optically active atom光激活原子optical active phonon光激活声子optical forms overlay光格式重叠optically flat filter光平面滤光片,光学扁平滤光器,光学平面滤光片optical communlcation光通信技术optical comnmnication光通信optical density color光密度色度