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.
遗憾的是，一秒钟的标准定义依赖于原子在绝对零度的条件，而实际的时钟需要在室温下运行，室温条件下电子壳层膨胀了。
Unfortunately, the standard definition of a second relies on what the atom does at a temperature of absolute zero. Real clocks need to run at room temperature, where the shell of electrons puffs up.
在科罗拉多州园石的国家标准与技术研究所的James Chin -Wen Chou，带领了一个研究团队，用原子时钟显示了在更为常见尺度范围内相对论对时间的影响。
Of the National Institute of Standards and Technology in Boulder, Colorado, led a team that used atomic clocks to show the effects of relativity at more familiar scales.
“标准模型”被认为是现行解释亚原子微粒之间相互作用最好的理论。
The current best theory to explain the interactions of sub-atomic particles is known as the Standard Model.
临界密度的值非常小：它相当于每立方米约6个氢原子，从地球上的标准来看这简直是真空！
The value of the critical density is very small: it corresponds to roughly 6 hydrogen atoms per cubic meter, an astonishingly good vacuum by terrestrial standards!
这些原子钟是全球计时的标准。
美国国家标准与技术研究所的研究者认为，原子的构造远远比电子复杂，其复杂程度超出我们想象，我们现在认为前景光明的自旋电子学其实只不过触到了原子学的皮毛而已。
Whole atoms, the NIST researchers say, are so much more complex than electrons that the promising possibilities of spintronics only scratch the surface of what's potentially possible.
除那些之外由于重力，为了描述亚原子粒子的相互作用，标准模型集合粒子物理学的两个理论。
The standard model brings together two theories of particle physics in order to describe the interactions of subatomic particles, except those due to gravity.
标准模型认为，原子中原子核的组成部分—质子是稳定不变的，但是许多后标准模型理论却不支持这种观点。
The Standard Model says that protons, which help make up the nuclei of atoms, are stable, but many post-Standard Model theories disagree.
原子企业的内部结构是相对稳定的，它的对外属性是标准的，容易集成和组合的。
The architecture inside the atom enterprise is relatively steady, and its outside attribute is standard and easy to be integrated.
美国国家标准技术研究所的研究人员正在开发一种镱原子钟，这种原子钟可能比铯原子钟更好。目前的时间标准是由铯原子钟确定的。
National Institute of Standards and Technology researchers are developing atomic clocks based on the element ytterbium that could outclass cesium atomic clocks, which currently set the standard.
文章对现在流行的安全电子交易SET标准进行分析，指出SET协议存在不满足数字商品交易的原子性以及确认发送原子性等缺陷。
The popular protocol of the Secure Electronic Transaction(SET)discussed by this paper has the flaws of the goods atomic transactions and certified delivery atomic in transacting digital goods.
方法：样品用硝酸和高氯酸消化后，导入火焰原子吸收分光光度计中，与标准系列比较定量。
Methods: the sample, after the nitric acid and the perchloric acid digestion was induced in the flame atom absorption spectrophotometer with standard series comparison quota.
采用标准加入原子吸收分光光度法测定铅锡合金锭液中铅的浓度，试验确定了最佳的测定条件。
The lead concentration in Pb-Sn alloy plating bath was determined by standard additional atomic ab-sorption spectrometry, and the optimal determination conditions were obtained.
方法用电子显微镜及原子力显微镜对生殖支原体标准株及分离株进行形态学的初步观察。
Mothods The morphology of Mg standard strains and clinical isolates were observed under electron microscopy (EM) and atomic force microscopy (AFM).
目的：建立用琼脂悬浮液进样，标准加入火焰原子吸收法测定奶粉中铁的方法。
Objective: to develop a new method for determination of iron in milk powder by standard addition method-flame atomic absorption spectrometry with AGAR suspension sampling technique.
标准模型将宇宙视为一个均匀结构，密度不会随著空间位置而变化，每立方公尺平均有一个原子。
Their standard model treats the universe as though its density did not vary from place to place but had a uniform, average value of one atom per cubic meter.
气体透平氦气模块堆（GT-MHR）标准题是国际原子能机构（IAEA）关于“高温气冷堆在事故工况下的热传输和余热载出”问题的合作研究计划（CRP）的一部分。
The benchmark problem for GT-MHR plutonium burner accidents is a part of the IAEA Coordinated Research Program(CRP) on "heat transport and afterheat removal for GCR under accident conditions".
在标准分析方法中，采用原子荧光分光光度法测定水中砷、硒、汞所用的标准溶液系列必须每次配制，给工作带来很大的不方便。
For the standard analytical method, the series of standard solution for the determination of As, se and Hg in water by atomic fluorescence spectrophotometry must be prepared for every test.
利用红外吸收谱、X射线光电子谱和原子力显微镜等，把它和标准rca清洗工艺的清洗效果做了比较。
The results of cleaning using the new type of cleaning technique and RCA standard cleaning technique are compared. The results are obtained by X ray photoelectron spectra?
介绍原子吸收光谱法检测过程中实验准备、标准溶液和样品制备方法、样品分析及数据处理等几个环节的质量控制措施。
The quality control of AAS measurement such as the test preparation, the standard solution and sample preparation method, the sample analysis and the data processing were introduced.
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.
利用我们现有的标准，一台试验型实验室铯束标准，三台氢原子钟以及若干台(2 -6)铷气泡标准来建立原子时尺度。
Based on available frequency standards: one prototype laboratory model of cesium clock, three hydrogen clocks and several (2-6) rubidium clocks, the SO atomic time scale has been established.
此项频移误差是决定铯原子喷泉频标准确度总体水平的主要因素之一。
This uncertainty is one of the critical factors governing the accuracy level of the cesium fountain frequency standard.
该分析方法的测定结果与原子吸收法测定结果一致，标准偏差在0．014～0．028之间，变异系数在1．14～2．26％，回收率在96～103％范围内。
The result is consist with of atomic absorption spectrometry. Standard error 0.014 ~ 0.028, variation coefficient1.14~2.26%, recover96 ~ 103%.
徐銤教授在网上声明中表示，中国的反应堆比日本更安全，因为它们的建造年份更近。他补充说，中国的安全标准遵循了国际原子能机构(IAEA)的各项要求。
China's reactors are safer than Japans because they were built more recently, said Prof Xu Mi in an online statement, adding that China's safety standards adhere to IAEA requirements.
为解决ERP系统标准化问题，提出了基于原子单元的ERP系统标准化研究策略。
To solve ERP system standardization problems, the research strategy based on atom-unit is discussed.
为解决ERP系统标准化问题，提出了基于原子单元的ERP系统标准化研究策略。
To solve ERP system standardization problems, the research strategy based on atom-unit is discussed.
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