Time has its direction, it always flow to future from the view of past, which is known as time arrow.

Time is like an arrow, time elapse quickly, 50 years extraordinary years blends in historical endless flow.

光阴似箭，日月如梭，50年峥嵘岁月融入历史长河。

互联网摘选

The time goes like an arrow, life is so short.

光阴似箭，生命如此短暂。

互联网摘选

Time flies like an arrow.

光阴似箭。

词典精选例句

In 1954, it was the first time that Arrow ( Nobel-laureates in economy 1972) and Debreu ( Nobel-laureates in economy 1983) showed the stricter description and proof of existence to general equilibrium with market excess demand funtions.

1954年，阿罗（1972年诺贝尔经济学奖获得者）和德布鲁（1983年诺贝尔经济学奖获得者）第一次利用超额需求函数给出了一般均衡的严格叙述和存在性证明。

互联网摘选

The technological risk is a kind of technological alienation. Its natural root is that the time arrow has made the natural evolution indefinite.

技术风险也是一种技术异化，其自然根源在于“时间之矢”使自然演化具有的不确定性；

互联网摘选

The Law of Physics and Time Arrow

物理规律与时间之箭

互联网摘选

Searching for the Origin of Time Arrow: Information Dissipation Principle

时间单向性探源：信息损耗原理

互联网摘选

The researchers said," although people generally think statistics and cosmology time arrow connected, but we can't repeat the big bang cannot in experiments prove this relationship."

研究人员曾说，“虽然人们普遍认为统计的和宇宙学的时间箭头相连，但是我们不能重演宇宙大爆炸也无法在实验中证明这种关系。”

互联网摘选

Molecular Chirality and Biological Time Arrow

分子手性和生物学时间箭头

互联网摘选

Now we are evaluating the uncertainties with the target to establish the new generation time and frequency primary standard, with uncertainty in the order of 10-15, of this nation.

目前我们正在进行不确定度评估，可望不确定度进入10-15量级，建立我国新一代时间频率基准装置。

互联网摘选

NIM 4~# Laser Cooling-Cesium Atomic Fountain Clock: A New Generation of Time and Frequency Primary Standard

NIM4~激光冷却铯原子喷泉钟&新一代国家时间频率基准

互联网摘选

A Time and Frequency Primary Standard of New Generation: NIM4# Laser Cooling-Cesium Atomic Fountain Clock

新一代时间频率基准：NIM4激光冷却-铯原子喷泉钟

互联网摘选

NIM4# Cold Cesium Atomic Fountain Clock a Time and Frequency Primary Standard of New Generation

NIM4铯冷原子喷泉钟新一代时间频率基准

互联网摘选

Cs atomic fountain clock is the reappearance of "seconds" definition of time and frequency standard device, has the highest accuracy, as a reference clock calibration with other atomic clock, is a time and frequency system based.

Cs原子喷泉钟是目前复现秒定义时间频率基准装置，具有最高的准确度，作为基准钟标校其他原子钟，是一个国家时间频率系统的基础。

互联网摘选

Optical clock is the most promising atomic clock and its uncertainty will reach to 10? 1 8 theoretically, which could be the time and frequency standard of the next generation.

光钟是目前公认的最具有发展潜力的原子钟，理论上预期光钟的频率不确定度可达10-18，有望成为国际新一代时间频率基准。

互联网摘选

In order to get rid of the dependence on other countries and establish self-governed time and frequency standard, the research on atomic frequency standard is imperative under the situation.

为了改变我国时间频率系统对国外的依赖，建立我国独立的时间频率基准，原子频率标准的研制势在必行。

互联网摘选

Dissemination of time and frequency standard of Shanghai Observatory

上海天文台时频标准的传播

互联网摘选

As development of science and technology, the demand for high-precision time and frequency standard is increasing.

随着科技的进步，人们对高精度标准时间频率的需求越来越高。

互联网摘选

It is an new approach of time interval and frequency measurement, which can be used to measurement short time interval by detecting the phase coincidence point between the signal and its transfer delay with related length.

这一理论利用信号的时&空关系通过对被测时间信号与其在长度空间上传输延迟的重合检测来测量短时间间隔，依此为基础可完成各种时间间隔与频率测量仪器。

互联网摘选

It also introduces the development of time and frequency measurement and control techniques which are the most representative in the metrology area. It can reflect the relationship among instruments and the newest achievements of science and technology.

同时还就测试计量领域最有代表性的时频测控技术的发展、近年来在国际上的影响反映了仪器与测量技术与现代科学技术的最新成就之间的互为依存的关系。

互联网摘选