thorium 造句怎么写

A radioactive isotope of thorium with mass number228.

impregnate with thorium oxide to increase thermionic emission.

The daughters of radon and thorium are easily adsorbed by aerosols.

They recognized that in a thorium province Pb208 would present complications.

By measuring the decay of radioactive uranium and thorium present in the encrusted speleothems, the geologists dated the layers.

potassium, phosphorus and thorium are other elements that lunar rocks have to offer a potential mining venture.

There are some radioactive nuclides such as uranium, radium, thorium and polonium in pit effluent of uranium mine.

There are some radioactive nuclides such as uranium, radium, thorium and polonium in pit effluent of uranium mine. The effluent must be treated before discharging.

I found in this way that of the other elements known, only the cornpounds of thorium behave like the compounds of uranium.

"The natural series are the thorium series, the uranium series, and the actinium series. These are headed by naturally occurring species of unstable nuclei that have half-lives comparable to the age of the earth."

advanced epithermal thorium reactor

Determination of thorium dioxide in thorium-tungsten alloys--Weight method

Uranium or thorium ores and concentrates.

Radium, uranium, and thorium are radioactive metallic elements.

Helium is the by product of millennia of radioactive decay from the elements thorium and uranium.

I was struck by the fact that the activity of uranium and thorium compounds appears to be an atomic property of the element uranium and of the element thorium.

Chemical compounds and mixtures containing uranium and thorium are active in direct proportion to the amount of these metals contained in them.

Deep underneath your feet is a hellish stone soup, kept hot by a torrent of radiation from poisonous isotopes of uranium, thorium and potassium in the earth's superheated mantle.

thorium lead age

Thorium ore, uranium ore, or mixed ore of uranium and thorium In which the rate of content weight uranium and thorium is higher than five-ten thousandths.

So, you've got polonium or thorium sitting inside this leaded box with one opening.

Surprisingly for astronomers and nuclear physicists, the abundance ratios of thorium to other heavy elements are very similar to ratios found for Milky Way stars.

Analytical method of thorium in water

Their discovery marks the first abundance determination of the actinides element thorium in a star beyond the Milky Way, and follows the detection of thorium in more than ten stars within the Milky Way.

a radioactive mineral consisting of thorium silicate; it is a source of thorium that is found in coarse granite.

fertile thorium 232.