confocal ring resonator
共焦环形共振器

• Weber photometer
• Weber's law
• wedge
• wedge angle
• wedged window
• wedge effect
• wedge etalon
• wedge film
• wedge filter
• wedge gauge
• wedge key
• wedge lens condenser
• wedge pattern
• wedge photometer
• wedge-shaped
• wedge slot
• wedge spectrogram
• wedge spectrograph
• wedge tolerance
• wedge-type interference filter
• wedging
• Weigert effect
• weigh-bridge
• weighing machine
• weight