- Radar that uses the Doppler effect to measure velocity.都普勒雷达：一种运用都普勒效应测速的雷达
- spherical angle
- spherical coordinate
- spherical-coordinate system
- spherical excess
- spherical geometry
- spherical polygon
- spherical triangle
- spherical trigonometry
- spherics
- spherics
- spherier
- spheriest
- sphering
- sphero-
- spheroid
- spheroids
- spherometer
- spheroplast
- spheroplasts
- spherule
- spherules
- spherulite
- spherulites
- sphery
- sphincter