photo-behavior
(1)光学特性
(2)感光特性

• two-point resolution
• two-rube lens
• two-slit diffraction
• two-stage electron image converter
• two-stage electrostatic image intensifier
• two-stage parametric
• two-step photoionization
• two-step Roman scatter
• two wavelength holographic interferometry
• two-way radio
• two-way valve
• Twyman-Green interferometer
• Twyman interferometer
• twystron
• Tyndal scattering
• typesetter
• typotron
• Tywman green interferometers Tywman Green
• U-band
• U-bolt
• U-center(uniform chromaticity scale) diagra
• U-form tube
• Ulbricht integrating photometer
• Ulbricht sphere
• ultex