- An electric sander that uses a revolving abrasive disk.电子打磨机：装有研磨作用的转动盘的电子打磨机
- spectrograph
- spectroheliogram
- spectroheliograph
- spectrohelioscope
- spectrometer
- spectrophotometer
- spectroscope
- spectroscopic analysis
- spectroscopic binary
- spectroscopies
- spectroscopy
- spectrum
- spectrums
- specula
- specula
- specular
- speculate
- speculated
- speculates
- speculating
- speculation
- speculations
- speculative
- speculator
- speculators