the second second mean value theorem of integration
Part Second Order and Second Moment Method
second by second operational analysis
Second order second-moment method
a sound mind in a sound body
infra-audible sound (=infrasonic sound)
rate of sound and attenuation of sound
sound absorption-sound insulation-vibration isolation technology
sound intensity and sound intensity level
sound navigation and ranging or sound radar
sound pressure and pressure level of sound
The Second Generation franchise management
3he Jinping Second Class Hydropower Station
a coupled systems of second order differential equation