铀的

There is some good ore in Canada and the former Czechoslovakia, while the most important source of uranium is Belgian Congo.

有一些好的在加拿大和以前的捷克斯洛伐克，然而最重要的铀来源是在比利时和刚果。

It thus became possible to study the cathode rays, and also the fluorescence they caused, outside the discharge tube and Lenard concluded from the experiments that he then did that the cathode rays were propagated through the air for distances of the order of a decimetre and that they travel in a vacuum for several metres without being weakened.

但是后来，1892年他在波恩大学做赫兹的助手时，赫兹让他观察了他的新发现，赫兹将一片盖上铝箔的含铀玻璃片放入放电管，当用阴极射线轰击铝箔时，铝箔下面发出了亮光。

A new denitration process of UNH which is reduced pressure vibro fluidized bed with microwave heating is well worth research based on the denitration kinetics characteristics of UNH.

根据六水硝酸铀酰的脱硝动力学特性，将微波加热减压振动流化床用于UNH的脱硝过程，是一个很有价值的脱硝工艺。

The sample can be admitted to the ion source only after it is completely vaporized, otherwise,the result of masurement will be severly distorted by fractional distillation.

用接近于待测样品中所含的卤代烃的杂质样品与纯净六氟化铀可配置出已知卤代烃含量的"杂质标样"。

About 21 percent of the world's nuclear reactors are now fueled by uranium mined using this method.

约21%的核反应堆正在开采的铀燃料的使用这种方法。

When the hydrogen bomb, the fusion reaction caused by a large number of high-energy neutron fission of uranium in the shell, release of energy and fission neutrons, fission and fusion neutron part of charging the lithium--6 nuclear event of a nuclear reaction Tritium, tritium and deuterium occurs again further fusion reactions.

当氢弹爆炸时，聚变反应产生的大量高能中子引起壳体中铀核裂变，放出能量和裂变中子，裂变中子有一部分与聚变装料中的锂－6核发生核反应产生氚，氚又与氘发生进一步的聚变反应。

The formation and gathering of coal, gas, oil and uranium are always related to the given sequence position or sedimentary system. Moreover, the formation of sequences are controlled by tectonism, supply of sediments, transformation of base level and climate etc.

煤、气、油、铀形成和富集总是和特定的层序部位或者特定的沉积体系相联系，而层序的形成受控于构造作用、沉积物供应、基准面变化和气候等多个方面。

One element of the lanthanide series and most of the elements in the actinide series are called trans-uranium, which means synthetic or man-made.

La系中的一个和Ac系中的大多数被人们叫做反铀元素，或者是人造的。

Since the United States has made similar demands of Brazil and Iran, an LEU compromise with North Korea would have to be part of a larger policy shift in Washington.

自从美国对巴西和伊朗提出了相同的要求，对于与协商后朝鲜取得一个低浓度铀浓缩计划的折中方案可能成为美国政府大规模政策转变的一部分。

So are electronic copies of detailed, e- mailable designs for a uranium-enrichment plant.

还有那些为富铀工厂设计的详细的能用电子邮件传输的电子拷贝。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。