rectangular coordinate system
直角坐标系

• forward looking laser sensor
• forward nodal point
• forward power
• forward reflection
• forward scattering
• forward-scattering angle
• forward voltage
• forward wave
• foster-seeley circuit
• FOT Fiber Optical Transceiver
• pivot-point
• pivot screw
• pixel
• placement
• Placideo's disk
• plain bearing
• plain view drawing
• plan
• planar access couple
• planar array
• planar dielectric waveguid
• planar-diffused transistor
• planar epitaxial phototransistor
• planar hologram
• planar iris