parameter transformation
参数变换

• U-band
• U-bolt
• U-center(uniform chromaticity scale) diagra
• U-form tube
• Ulbricht integrating photometer
• Ulbricht sphere
• ultex
• ultifocus lens
• ultimate
• ultimate particles
• ultimate pressure
• ultimate range
• ultimate ray
• ultimate vacuum
• ultiplicator
• ultra achromatic lens
• ultra bright
• ultrafast
• ultrafast coherent phenomena
• ultrafast light pulse
• ultrafast relaxation
• ultrafiltration
• ultraharmonic
• ultraharmonics
• ultrahigh frequency