查询词典 caesium

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.

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。

Moreover, the nuclear radiation was not confined to the upper atmosphere: caribou and people who survived were dangerously contaminated with caesium 137, and cancer, lung disease and infant mortality soared.

而且，核辐射并不局限于上层大气，生存下来的北美驯鹿和人类危险地受到了铯137的污染，以及癌症、肺病和新生儿死亡率激增的危害。

A photoelectron beam with sensitivity of 8 μA/mW and polarization of above % is obtained on the NEA GaAs (00) surface in the activation with caesium and oxygen.

在用此法激活的NEA GaAs(00)表面上可得到灵敏度为8μA/mW，极化度约用%以上的光电子束。

Yesterday afternoon, the reporters saw this survey report shows : A total of 168 pieces of radioactive sources, namely power plants, the raw material for caesium and cobalt, through its role in the detection of the coal-dust content and factories around the suspended particles.

昨天下午，记者看到了这份调查报告，报告显示：妈湾电厂共有168枚放射源，其原料分别为铯和钴，其作用为检测通过落煤管的灰尘含量和工厂周围的悬浮颗粒。

In a caesium clock, the optimum frequency corresponds to 9,192,631,770 oscillations of the microwave per second (just over 9 GHz in frequency), so dividing the output electronically by this number provides one-second 'ticks' of the atomic clock.

对于铯原子钟，其最佳频率是微波每秒振动9，192，631，770次(频率略高于9 GHz)，而用电路把输出的信号除以这个数字就提供了原子钟的一声"滴答"。

Physicists have achieved a form of teleportation by using a property from the weird world of quantum physics to transport the information contained in a gas of caesium atoms, destroying the original and creating a copy on the other side of the laboratory.

通过利用量子物理世界的一种特性，物理学家在实验室的一端毁坏原件而在另一端创造出副件，实现了包含在铯原子气体中的信息传送，这是远距传物的一种形式。

The standard system is composed of coil system, constant current power supplies system, advanced compensation system based on caesium optically pumped magnetometer and the measurement system and so on.

恒定弱磁标准装置是由线圈系统、光泵地磁补偿系统、恒流源系统、磁场测量系统等组成。

This system has been applied to the stability measurement of the crystal oscillators and the rubidium clocks as well as the caesium clocks with zero dead time and non-offset frequency, and also to the calibration of the secondary frequency standard.

其测量精度目前约为2×10~(-12)τ~(-1)(0.1s≤τ≤1000s)，已应用于晶振、铷钟和铯钟的无间隙时间不偏调频率的稳定度测量以及次级频标的校频中。

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。

They sprayed standard diesel fuel, mixed with a caesium compound to enhance its X-ray contrast, into a chamber containing the inert gas sulphur hexafluoride to stop it combusting.

为了提高燃油的X光对比差异，他们把一种铯化合物与标准的柴油燃料混合在一起，喷射进一个容纳有惰性气体sulphur hexafluoride的燃烧室，以阻止燃油燃烧。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。