氦是钍和铀元素数千年放射性衰变的副产品。
Helium is the by product of millennia of radioactive decay from the elements thorium and uranium.
她发现钍也是如此。
1932年，氧化钍胶体被首次引进。
用钍发电有许多不同的方式。
There are a number of different ways to use thorium to produce electricity.
从中微子工作计算出铀和钍约产出20太瓦。
The calculation from the neutrino work yields 20 terawatts for uranium and thorium.
镭、铀和钍都属于放射性金属元素。
Radium, uranium, and thorium are radioactive metallic elements.
稀土矿山常常也含有放射性元素，比如铀和钍。
Rare earth mines often also contain radioactive elements, such as uranium and thorium.
铀元素随后缓慢分解为另一种元素钍。
Followed by the slow decomposition of uranium to another element thorium.
把钋或者钍放在,开一个小口的含铅的盒子里面。
So, you've got polonium or thorium sitting inside this leaded box with one opening.
与铀相比，钍的储藏量更为丰富，能量密度也更高。
Compared to uranium, thorium is far more abundant as well as much more energy-dense.
中国大力研发钍能，将改变世界能源景观。
China's dash for thorium power could alter the energy landscape.
铀或钍矿砂及其精矿。
用萃取色层法分离钍。
钾、磷、钍是月岩可向将来的采矿企业提供的其它元素。
Potassium, phosphorus and thorium are other elements that lunar rocks have to offer a potential mining venture.
这显然证实了检测钍。
她告诉我她不支持，因为钍反应堆不是一种被证明可靠的科技。
No, she told me, because thorium reactors are not a proven technology.
理由是煤燃烧过后省些的煤灰含有放射性元素，尤其是铀和钍。
The reason is that the ash left over when coal is burned contains radioactive elements, notably uranium and thorium.
而使用氧化钍(二氧化钍)作为代理人迅速停止钍导致肝癌。
The use of thoria (thorium dioxide) as an agent was rapidly stopped as thorium causes liver cancer.
地质学家在石笋上钻孔，使用铀衰变成钍的同位素的方法确定它们的年龄。
In this case the geologists drilled into the stalagmites and estimated their age from the way that uranium decays into an isotope of thorium.
该模型估计，铀和钍(一起)产生占地球产生的约44太瓦热量中的16太瓦。
That model estimated that uranium and thorium (together) accounted for about 16 terawatts of the approximately 44 terawatts of heat produced by the Earth.
举例来说，计算表明，钍- 229的原子核内存在着能发出紫外线的转变过程。
Calculations suggest, for instance, that in the nucleus of the isotope thorium-229 is a transition that should emit ultraviolet rays.
少数元素，其中有铀和钍，通过它们核的变化自然蜕变成较轻的元素。
A few elements, among them uranium and thorium, spontaneously disintegrate into lighter elements by chances.
他们用皮埃尔所发明的仪器来进行测量。玛丽注意到钍元素也是具有放射性的。
Using Pierre’s invention to make the measurements, Marie noted that thorium was radioactive.
这颗晕星不同于大多数超新星，它吐出的许多元素比铁还重，其中包括放射性钍和铀。
Unlike most supernovae, this one spewed lots of elements far heavier than iron, including radioactive thorium and uranium.
铀矿山坑道污水含有铀、镭、钍、钋等放射性核素，外排前必须加以处理。
There are some radioactive nuclides such as uranium, radium, thorium and polonium in pit effluent of uranium mine.
出于所有这些理由，越来越多的科学家和能源专家认为，主要核燃料应该从铀转换成钍。
For all of these reasons, a growing number of scientists and energy experts believe that the world should switch from uranium to thorium as its primary nuclear fuel.
我国有些地区和某些类型住房中钍射气浓度较高，有必要加强这一问题的研究。
The indoor thoron concentration in some areas and some kind of houses is higher, the study in this field should be strengthened.
他们当时对一种放射性元素钍很感兴趣，这种元素能驱动核反应堆，却不能制造生产成武器。
They had been interested in thorium — a radioactive element that can fuel nuclear reactors but not be processed into weapons.
在钍基先进CANDU堆的概念设计中， 钍燃料的循环利用方式是一重要问题。
The fuel cycle model is one of the most important problem in the concept design of Thorium Advanced CANDU Reactor(TACR).
在钍基先进CANDU堆的概念设计中， 钍燃料的循环利用方式是一重要问题。
The fuel cycle model is one of the most important problem in the concept design of Thorium Advanced CANDU Reactor(TACR).
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