衰变产物

The oxidation of Ce results in loss of REE, U, and alpha decay product Pb during the alteration of the pyrochlore.

这表明在烧绿石蚀变期间，Ce的氧化导致了稀土元素、U及α衰变产物Pb的损失。

It occurs in Uranium ores as a by product of nuclear decay.

它作为一种原子核衰变的副产物，产生在铀矿石里。

Radon gas is a natural, chemically inert gas that is a natural decay product of uranium.

氡气是一种天然、化学惰性气体衰变产物，是一种天然铀。

Radium does not occur free in nature but occurs in natural ores such as pitchblende as a disintegration product of radioactive decay of heavier elements, including uranium.

在自然界镭不存在游离状态，但存在于天然矿石中，如沥青铀矿，是更重元素放射性衰变的产物。

Radium does not occur free in nature but occurs in natural ore s such as pitchblende as a disintegration product of radioactive decay of heavier elements, including uranium.

在自然界镭不存在游离状态，但存在于天然矿石中，如沥青铀矿，是更重元素放射性衰变的产物。

Based on the analysis of parent-daughter relationships in the three relevant fission product decay chains, a two-step delayed chemical separation procedure for rapid isolation of 91Sr from neutron-irradiated 235U sample was developed.

以衰变链中的母子体关系为依据，"两步延迟分离法"为基础，对裂变产物中91Sr的快速分离方法进行了研究。

Radioactive decay studies have found a kinds of elements can be α or β decay and the decay into another element, while the α-decay product of -α-rays became one of the deep structure of the material means of .1911, the Rutherford and others bombarded atoms with α-rays observed wide-angle deflection to determine the nuclear structure of atoms and nuclei was first proposed the term .1919 year, Rutherford and others have also found that with α-ray bombardment of nitrogen will release the nuclear protons, this is the first time Artificial realization of a nuclear reaction, after the bombardment of nuclei with the radiation caused by nuclear reaction method to become the primary means of research in nuclear.

放射性衰变研究发现了一种元素可以通过α衰变或β衰变而变成另外一种元素，而α衰变的产物——α射线又成了人们探讨物质深层结构的手段。1911年，卢瑟福等人用α射线轰击原子、观察到大角度偏折，从而确定了原子的有核结构，并首次提出原子核这一名词。1919年，卢瑟福等人又发现用α射线轰击氮核会放出质子，这是首次用人工实现的核反应，以后用射线轰击原子核来引起核反应的方法逐渐成为研究原子核的主要手段。

The method needs several parameters, such as average fission yields of fission products, correction for reaction, decay correction for radlioactive fission products in reactor, average fission energies of fissionable nuclides and so on.

它需要若干参数，如裂变产物的平均裂变产额，反应的修正量，放射性裂变产物的堆内衰变修正量，可裂变核素的平均裂变能量等。

A bowl - shaped depression in a surface made by an explosion or the impact of a body,such as a meteoroid.

此外，还介绍了一些新方法，例如测量大气中的氡及其衰变产物。

Since the polarization of J~p = 1/2~+ hy-peron can be easily determined be measuring the angular distribution of its weak decay-products, the measurement of hyperon polarization becomes an important aspect of high energy polarized experiment.

由于弱衰变的J~P=1/2~+超子的极化可以比较方便地通过其衰变产物的角分布来确定，对超子极化的研究成为高能极化实验的一个重要内容。

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