align
(1)列成一行
(2)瞄准目标
(3)对准，校直
(4)定位，定中心

• scotopic range
• scotopic vision
• scrambled image
• scramlber
• scraped surface
• scratch hardness
• scratching
• scratch pad memory
• scratch resistance
• screen
• screen absorptance
• screen cathode
• screen grid
• screen illumination ration
• screening electron
• screening method
• screening rate
• screening test
• screen number
• screen persistence
• screw
• screw axis
• screw cap
• screw drive
• screw-driver