前照灯光束对光操纵件
headlight beam aiming control
冷光束低压电子投影灯
cool beam low volatage electronic projective lamp
标形双光束光谱仪
comb-type doble beam spectrometer
单光束光电比色计
single-beam photoelectric colorimeter
单光束光谱辐射计
single beam spectrum radiator
分裂光束光度分析仪
split-beam photometric analyzer
高斯光束光斑半径
beam width of Gaussian beam
共轴光束光谱仪
coaxial beam spectrometer