turn around time
(1)解题周期(分时系统中用)
(2)换[方]向时间(数据传输的)

• whisker
• whisker crystal
• whisker diode
• whispering gallery effect
• whispering mode
• white heat
• white light
• white-light coronograph
• White Light Emitting Diode Lamp
• white-light fringe
• white-light hologram
• white-light holography
• whiteness
• whiteness index
• white noise
• white object
• whiteout
• white radiation
• white rouge
• white wedge
• white X-radiation
• white X-rays
• whitney key
• Whiworth form of thread
• Whiworth screw pitch