放射性元素

A series from actinium to lawrencium of 15 radioactive ''.

15个从锕到铹的原子量递增的放射性元素。

A series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium.

15个从锕到铹的原子量递增的放射性元素。

Atomic numbers from actinium to lawrencium.

15个从锕到铹的原子量递增的放射性元素。

The crystal-chemical properties and the genesis of the allanite have been disscussed, in addition, the radioative decay of Th and U and the oxidation cause rare-earth elements to be released from its lattice to d...

认为本区的褐帘石是部分变生的。变生的机理是因为其晶格中含放射性元素U，Th高，且这与褐帘石的选矿性能有重要关系。

With the discovery of the radio-elements, physicists found themselves for the first time confronted with strange substances, minute generators of radiation endowed with an enormous concentration of energy; alpha rays, positively charged helium atoms, beta rays, negatively charged electrons, both possessed of a kinetic energy which it would be impossible to communicate to them by ''.

由于放射性元素的发现，物理学家们第一次发现自己面临许多陌生的物质——许多具有巨大的浓缩能量的、能够发生辐射的细微物质，如射线，即带正电荷的氦原子小射线，即带负电荷的电子。

Any of a group of five chemically related nonmetallic elements including fluorine,chlorine,bromine,iodine,and astatine.

锕类任何化学性质相似，原子序数在89与103之间变化的放射性元素

Plutonium was first discovered in a Berkeley lab (as were the aptly-named berkelium and californium).

放射性元素钚就是首先在巴克利实验室发现的（确切的名字该叫巴克利姆或加利福利姆）。

Curies research into the properties of two different uranium ores, pitchblende and chalcolite. led to the discovery of radium and polonium, other radioactive elements.

居里对两种沥青铀矿和铜铀矿的性能研究引导了镭和钋以及其他放射性元素的发现。

Ironically it was Irène Joliot-Curie, the daughter of Marie and Pierre Curie who first isolated polonium in 1898, who was the first to die because of exposure to it.

具有讽刺意味的是这个死者就是1898年首次分离出钋元素的居里夫妇的大女儿伊伦-约里奥-居里。她是因为长期接触这种放射性元素而死亡的。

By this time the Curies were so certain of the presence of the new element that they wondered what name it should be given--what it would look like.

至此，居里夫妇确信这种新的放射性元素的确是存在的，他们开始考虑为这新元素命名——它看起来是怎么样的？

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了