catadioptric telescopes
反射折射望远镜

• harmonic amplifier
• harmonic analyser
• harmonic component
• harmonic curve
• harmonic distorsion
• harmonic electromagnetic plans wave
• harmonic expansion
• harmonic function
• harmonic generation
• harmonic generation crystal
• harmonic-generator laser
• harmonic mixing
• harmonic mode locking
• harmonic motion
• harmonic optcial beam
• harmonic oscillator
• harmonics
• harmonic vector wave
• harmonic wave
• harmonic wave analyzer
• harmonization
• harmonograph
• Hartley band
• Hartmann criterion
• Hartmann diaphragm