microscope photometers
显微镜光度计

• bead
• beaded screen
• beading
• bead phototransistor
• beam
• beam-addressable technology
• beam angle
• beam angle of scattering
• beam antenna
• beam aperture
• beam attenuator
• beam axis
• beam balance ratio
• beam brightness
• beam bunching
• beam candlepower
• beam combiner
• beam current
• beam deflecting crystal
• beam deflecting mirror
• beam deflection
• beam deflection tube
• beam density
• beam deviation factor
• beam diameter