specular cross-sections - stake of a line
- specular cross-sections
- specular iron
- specular pig iron
- specular reflection
- specularite
- speculum
- speculum metal
- speech amplifier
- speech channel
- speech volume
- speech-input amplifier
- speech-modulated
- speed box
- speed brake
- speed capacity
- speed car
- speed change
- speed changer
- speed concreting
- speed control