单词	structure of state
释义	structure of state 国家结构
随便看	scanning sonar scanning sonar equipment scanning sonar subsea survey scanning sonar system scanning sonobuoy scanning spectrometer scanning spectrophotometer scanning speech scanning speed scanning speed adjustment scanning speed control scanning speed modulation scanning speedscanning velocity scanning spherical-mirror interferometer scanning spot scanning spot beam scanning-spot camera scanning spot control scanning spot dimension scanning spot focusing control scanning spot X dimension scanning spot x-dimension scanning spot X-ray tube scanning spot Y dimension scanning spot y-dimension