spectral radiant exitance
光谱辐射出射度

• biological particle
• biology
• bioluminescence
• biomedical engineering
• bionice
• bionics
• biophotometer
• biophysics
• bioptix
• biot
• Biotar lens
• bipartition angle
• biphase
• biphone
• biplanar image tube
• biplanar lens
• biplane
• biplate
• bipolar
• bipolar switch
• bipolar transistor
• bipost lamp socket
• biprism
• biprism interference
• Biprisms