percentage of articulation
清晰度百分数

• following error
• following range
• following rate
• follow scanner
• follow shot
• follow-up
• followup device
• followup system
• foot
• footage
• footboard
• foot-candela
• foot-candle
• footcandle
• foot-lambert
• footlambert
• footlight
• footplate
• foot-pound-second
• footprint
• foot screw
• footstock
• foot switch
• for-and-aft axis
• forbidden band