resonance self-focusing
共振自聚焦

• coil of wire
• coil out
• coimage
• coincidence
• coincidence circuit
• coincidence counting
• coincidence focometer
• coincidence prism
• coincidence rangefinder
• coincidence-reading device
• coincidence spectroscopy
• coincidence spectrum
• coincidence vail
• co-invariant
• CO lasers
• colcothar
• cold bend
• cold cathode
• cold cathode emission
• colddrawn
• cold emision
• cold light
• cold light mirror
• cold mirror
• cold mirrors