multiple-passing grating
多通光栅

• doublem\-beam spectrophotometer
• double mirror
• double-pass monochromator
• double pass planar dye laser amplifier
• double-pass spectrometer
• double-pivoted type
• double prism field glass
• double protractor
• double-pulsed flash lamp
• double-pulsed time
• double pulse excitation
• double pulsing
• double-purpose camera
• double quartz prism spectroradiometer
• doubler
• double reflection
• double refracting crystal
• double refraction
• double samping inspetion plan
• double scattering
• double sided angle-reading system
• double sighting error
• double-slit interferometer
• double star
• double stratum