Scientists developed the first atomic clock in 1949.
科学家们于1949年制作了第一台原子钟。
NASA plans to test a full-size solar sail for chemical-free propulsion and a deep space atomic clock.
此外，美国国家航空航天局（下文简称NASA）还计划测试一个完整尺寸的太阳帆，为航天器提供绿色推进能源，以及测试一个深空原子钟。
His discoveries, which won him the Nobel prize, led to the caesium atomic clock and the hydrogen maser.
这一获得诺贝尔奖的发现产生了铯原子钟和氢微波激射器。
At the US Naval Observatory in Washington, its newest atomic clock is getting a climate-controlled room of its own for the first time.
在位于华盛顿的美国海军天文台，这里最新的原子钟首次得到了一个拥有空调的专用房间。
The key to both experiments is the quantum logic atomic clock, which USES the oscillation of a single aluminium ion to maintain precise timing.
两个实验的重点是量子铝原子钟，它利用单一铝离子的震荡来精准测量时间的流逝。
The atomic clock is accurate to one millionth of a second.
原子钟计时可以精确到百万分之一秒。
One such atomic clock is so accurate that it will probably lose no more than a second in 3,000 years.
一座这样的原子钟精确度很高，在3,000年期间也不会慢掉一秒钟。
Through analysis, technical requirements for VCXO used in the cesium atomic clock are put forward in this paper.
本文从分析压控晶体振荡器的技术指标对铯束频标的影响出发，提出对它的技术要求。
The standard frequency in television signals is a signal with high stability and accuracy, controlled by the atomic clock.
电视信号中的标准频率信号是受原子钟控制的高稳定度、高准确度的信号。
A time keeping system consists of atomic clock assembly, measuring and comparing system and computation of atomic time scale, etc.
守时系统是一种需要连续、可靠运转的复杂系统，包括守时钟组、比对测量系统、原子时归算等多个环节。
The multiple coherent interactions of atoms and oscillatory microwave field play an important role in the potential accuracy of atomic clock.
原子频标中微波场与原子的作用方式是决定其潜在精度的主要因素之一。
Another showed that an atomic clock sped up when launched on a rocket 10,000 kilometres above Earth's surface, where the planet's gravitational field is weaker.
另一项研究显示，当把原子钟用于火箭，发射到离地面1万公里以上的高空时，由于那里的地球引力场较弱，而略微有所加快。
Rubidium atomic clock is used for the time reference signal in the system, by which the user can get the positioning information without sending any signal.
该系统用高稳定度铷钟作为时间基准信号，实现了无源导航定位功能。
The loop design of the passive atomic clock is discussed to accomplish the transfer of the frequency accuracy and stability from the atomic resonance to the locked oscillator.
本文就被动型原子钟的环路设计讨论了原子谐振器频率准确度和稳定向锁定晶振的传递问题。
In the proposed schemes, the redundant configuration of grandmaster clock using Beidou navigation satellite system, GPS (Global Positioning system) and atomic clock is discussed.
在应用方案中，讨论了利用北斗卫星定位系统、全球卫星定位系统(GPS)和原子时钟构建最高级时钟的冗余配置方案。
Based on a numerical model cesium atomic clock designed before, the influence of atomic velocity distribution consisting of two peaks and three peaks has been studied respectively.
基于已建立的小型铯原子钟计算机模型系统，研究了铯束原子速度为双峰分布和三峰分布对原子钟微波频谱的影响。
The atomic clock designed according to the method has simple structure and omits a locking circuit of the traditional atomic clock, thereby improving the adaptability for the external environment.
按照上述方法设计的原子钟结构简单，省去了传统原子钟的锁定电路，提高了对外部环境的适应性。
This paper introduces a user terminal equipment for the double-satellite positioning system. The terminal, named continuous navigation passive positioning system, is based on Rubidium atomic clock.
介绍了一种基于铷钟的双星系统用户终端机——连续导航无源双星定位系统。
This paper introduces a user terminal equipment for the double-satellite positioning system. The terminal, named continuous navigation passive positioning system, is based on Rubidium atomic clock.
介绍了一种基于铷钟的双星系统用户终端机——连续导航无源双星定位系统。
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