tangential
(1)切线的
(2)切向的
(3)正切的

• tilt graticule
• tilt head
• tilting level
• tilting mirror
• tiltometer
• tilt table
• timbre
• time0base
• time-averaged fringe pattern
• time-averaged holographic interferometry
• time-averaged holography
• time-averaged interferometer
• time-averaged interferometry
• time-averaged shadow-moire method
• time-based optical rang finder
• time-base filtering
• time base marker
• time coherence
• time constant
• time delay
• time-dependent lensing effect
• time-dependent propagation
• time dilation
• time-distance curve
• time division multiplexing