luminescent counter
发光计数器，闪烁计数器

• grain noise
• grain refinement
• grain size
• grain structure
• gram
• gram atom
• gramme ring
• gram molecule
• gram-rad
• Grandagon
• granlte
• granular
• granularity
• granular structure
• granulation
• grape jelly
• graph
• graphechon
• graphecon
• graphic
• graphical construction of image
• graphical design of otpical system
• graphical integration
• graphical ray tracing
• graphic analysis