cathode-ray tube lens
阴极射线管透镜

• dioptrics
• dioptric strength
• dioptric substances
• dioptric system
• dioptric tester
• dioptri scale
• dioptrometer
• dioptry
• dioter ring
• dioxide
• dip
• dip circle
• dip compass
• diphase
• diphenylene naphthalene
• diploe moment
• diploid
• diplopia
• dipmeter
• dipolarity
• dipolar polarizability
• dipole
• dipole absorption
• dipole antenna
• dipole-dipole broadening