如果这些微波的频率恰到好处，他们将会使这些反原子产生自旋翻转。
If the frequency of these microwaves is just right, they will flip an anti-atom's spin.
所以，在1967年，SI采用了一个更为精确的制定办法，该办法基于一个铯原子在两个能级之间跃迁时的辐射频率。
Thus, in 1967, SI adopted a more precise definition based on the frequency of the radiation a caesium atom emits when it flips between two energy states.
化学家们早就知道，在分子中原子以特定的取决于整体分子结构的频率振动。
Chemists have long known that atoms in a molecule vibrate at a particular frequency, depending on their overall molecular structure.
这些齿可以像尺子一样用来异常精确的测量激光器、原子、天体或其它物体发出的光的频率。
The teeth can be used like a ruler to measure the light emitted by lasers, atoms, stars, or other objects with extraordinarily high precision.
清单9显示了另一个样例查询，它确定的是不同的原子(或离子)在不同的化合物中发生的频率。
Listing 9 shows another sample query, which determines how often different atoms - or ions - occur in different compounds.
诸如NIST-F1的仪器运用的原子信号是频率为数十亿赫兹的微波，新式时钟包括奥茨的都是运用频率快上百万倍的光。
While devices like the NIST-F1 use atomic signals of microwave frequency with billions of cycles per second, newer clocks, including Oates’, rely on light waves beating a million times faster.
这是通过，用一个非常宽的频率梳的两个部分测量一个已知的精确的原子钟频率，然后比较两者测量的结果来实现的。
This involves taking two measurements from different parts of a very broad comb and comparing the results to precisely known frequencies of an atomic clock.
轰击氢原子可以与某一特定的频率产生共鸣: 1420兆赫。
Zap a hydrogen atom and it will resonate at a particular rate: 1420 megahertz (MHz).
此实验对下一代“原子钟”的产生是重要的一步，下一代“原子钟”将是基于光频而不再是微波频率。
The experiments are a significant step toward next-generation "atomic clocks" based on optical rather than microwave frequencies.
这些测试的频率将会与翻转普通氢原子的频率作对比。
The frequency needed to do this can then be compared with that which flips the spin of an ordinary hydrogen atom.
这种技术实际上测量的是原子间键的震动。当研究人员拉伸原子间的键时，震动频率会发生变化。
The technique essentially measures bond vibration between atoms. As researchers stretch the bond, the vibration changes frequency.
如果你有原子晶体，它的声振动遍布不同可能的波长范围，频率都不高。
If you have an atomic crystal, it just has the sound vibrations at all the different wavelengths that are available. They're never very high.
一个铯钟的工作原理是：将铯原子暴露于微波中，直到它们以一个频率共振，然后以一个相应的周期作为时间度量。
A cesium clock operates by exposing cesium atoms to microwaves until they vibrate at one of their resonant frequencies and then counting the corresponding cycles as a measure of time.
为了确定在任一给出的位置的alpha常数的强度，科学家们测量了不同原子的电子从一个能级跃迁到另一能级的频率。
To determine how strong the alpha constant was in any given spot, the scientists measured the frequency at which electrons in various atoms would hop from one energy level to the next.
然而，造成测量还有些不准确的来源在于原子在它自己周围的微动，以至在朝着光束和离开光束移动时，使光束的频率稍有所变化。
However, a source of inaccuracy comes from the fact that the atoms jiggle around, so that those moving toward and away from the beam experience slightly different frequencies.
每一个颗卫星上都装有四个“原子钟”，它们根据量子理论法则，以精确的频率振动。
Each satellite contains four "atomic clocks", which vibrate at a precise frequency, according to the laws of the quantum theory.
原子的重量增加时，震动的频率减小。
As the weight of the atom increases, the frequencies of the vibrations diminish.
激光的频率被调节到能够点亮钠原子，这些钠原子是陨星在大气中很薄的一层里解体所留下的。
The laser beam is tuned to a frequency that lights up sodium atoms, which are left by disintegrating meteorites in a thin layer of the atmosphere.
这就是众所周知的铯原子钟的基础，它是目前的频率和时间基准。
This is the basis for the well - known cesium clock, presently the standard of frequency and time.
反氢和氢原子应该有相同的特性，例如发出光的频率一模一样。
Antihydrogen and hydrogen atoms should have the same properties, emitting the exact same frequencies of light, for example.
原子频标是空间技术和授时系统的频率与时间基准，直接决定了卫星通信的质量。
Atomic frequency Standard is the frequency and time benchmark of space technology and time awarding system, directly determining the quality of satellite communications.
我们研究了在强近共振激光脉冲驱动下，二能级原子对不同频率的试探脉冲的瞬态反应。
Transient responses of two-level atoms to a probe pulses with different frequencies have been studied in the presence of near-resonant laser driven pulse.
芳香环谱带的相对强度和频率对于镧系元素原子序数的依赖关系表明双-双效应的存在。
The dependence of relative intensity and frequency of bands of aromatic ring on the atomic number of lanthanides indicates the presence of a double-double effect.
他们的第一次实验将会用不同频率微波轻推被困的反原子。
Their first experiment will involve nudging the trapped anti-atoms with microwaves.
当这两个方向不平行或垂直时，色散零点相对于原子跃迁频率发生移位。
When these two directions are not parallel or perpendicular to each other, the dispersion zero-point shows a shift to the transition frequency of the atom.
要使晶体振荡器的输出信号保持原子标准所固有的频率准确度和稳定度，所用压控晶体振荡器必须具有优良的性能。
The performance of VCXO must be excellent so as to maintain the inherent frequency accuracy and stability of the atomic standard.
对我厂的频率标准X SR型铷原子频标发生的故障及具体检修情况作了较详细的分析和介绍。
Analyses failures of XSR type of Rubidium atomic frequency standard used in our factory, and introduces the situation of particular overhaul in detail.
用密度矩阵的方法从理论上分析了不同频率的两个激光场混合泵浦的光纤放大器中，由光场诱导的原子相干效应。
The effects of atomic coherence on fiber amplifiers pumped by two lasers with different frequences are studied by using density matrix theory.
当激光驻波场的频率大于原子的共振频率时，原子由于受到偶极力的作用将被会聚到驻波的波节处。
When the frequency of laser standing wave is higher than the resonant frequency of atoms, the atoms will be focused on the wave node of the standing wave.
当激光驻波场的频率大于原子的共振频率时，原子由于受到偶极力的作用将被会聚到驻波的波节处。
When the frequency of laser standing wave is higher than the resonant frequency of atoms, the atoms will be focused on the wave node of the standing wave.
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