synchronizing mode-licked
同步锁模

• directional coupler
• directional emissivity
• directional emittance
• directional focusing
• directionality
• directionality effect
• directional reflectance
• direction cosine
• direction finder
• direction fluctuation
• directionless
• directivity
• direct light
• direct lighting
• direct measurement
• direct method
• direct method of measurement
• direct modulation
• direct nuclear pumped laser
• directon theodolite
• director
• director telescope
• direct-positive photographic material
• direct proportaion
• direct-radio spectrophotometer