[网络] 铯电子管;铯束管 cesium atomic-beam tube: 铯原子束管cesium beam atomic clock: 铯辐射原子钟cesium beam controlled oscillator: 铯束控制振荡器cesium-beam atomic clock: 铯束原子钟cesium-beam atomic oscillator: 铯束原子钟下载手机词典可随时随地查词查翻译