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- cesium beam time standard 铯束时间标准
- Indicated the good result of the long-term operation of the optically pumped cesium beam frequency standard in China. 强调了中国光抽运铯原子束频标经过长期连续工作所取得的优秀成果。
- A portable laser system, continually working for very long period, is the key part in realization of an optically pumped cesium beam frequency standard. 长期连续工作的袖珍激光系统是实现实用的光抽运铯束频标的关键。
- The Hong Kong Time Standard is provided by a caesium beam atomicclock. Accuracy within fractions of a microsecond a day is maintained. 天文台利用铯原子钟，提供香港的时间标准，该钟误差每日不超过一微秒。
- A time standard necessary to attend a particular meet or event. 出席特定赛事或比赛所必须的规定时间。
- Cesium beam atomic frequency standard 铯束原子频率标准
- The Hong Kong Observatory maintains the Hong Kong time standard and provides time signals for the public. 香港天文台负责维持香港的时间标准,以及提供报时讯号。
- The Observatory also operates the official time standard for Hong Kong, provides basic astronomical information and maintains a seismological monitoring network. 此外，又负责香港标准时间的报时服务、提供基本天文资料和操作地震监测网。
- Research and Development of Cesium Beam Tube Tester 铯束管测试仪研制
- Of every time standard upgrade or refine, became the proof that people advances to more civilized direction. 每一次标准的升级或细化，都成了人们向更文明的方向进步的证实。
- cesium beam atomic frequency standards 铯束原子弹频率标准
- The Observatory also operates the official time standard for Hong Kong,provides basic astronomical information and maintains a seismological monitoring network. 此外，天文台又负责香港标准时间的报时服务、提供基本天文资料和操作地震监测网。
- The accuracy of the clock is within fractions of a microsecond a day of the international time standard kept by the International Bureau of Weights and Measures in France. 该钟所报时间与位于法国的国际度量衡局所规定的国际时间标准比较,每日相差不超过一微秒。
- But the prospects for it as a widely adopted universal time standard are about as good as the frustrated aspirations for Esperanto to become the world's lingua franca. 当年许多人提倡世界语作人类通用语言，可惜壮志未酬。
- The Formation of Ring-shaped Beam in a Cesium Beam Tube 圆环束的形成
- Fruit juices ferment if they are kept a long time. 果汁若是放置很久，就会发酵。
- Time is sometimes called the fourth dimension. 时间有时被称为第四度空间。
- A Long Term Continually Running Laser System for Optically Pumped Cesium Beam Frequency Standard 长期连续工作的光抽运铯束频标激光系统
- I think the work can be completed ahead of time. 我认为这项工作能提前完成。
- He will come on time even though it rains. 即使下雨，他还是会准时来的。
