helium造句怎么写

And then we have gas cooled reactors which can use supercritical carbon dioxide or helium.

The 40 liter container under pressure of 150 atmospheres contains 6 cubic meters of helium.

He also invented the Skyhook, an air rescue system that involved an airplane and a large helium balloon.

The adventurer, aged 37, strapped 54 industrial strength helium balloons to his gondola and crossed the 22-mile waterway to the continent

The next heaviest element in the periodic table, the inert gas helium, is used for detecting cracks in pressure vessels and the like.

Versus looking at, for example, helium or neon or argon, these are all inert gases, inert meaning essentially do not react, those were grouped together in the periodic table.

Similarly we see as we go down the table, so as we're going from one row to the next row, so, for example, between helium and lithium, we see a drop; the same with neon to sodium, we see a drop here.

However, there is a very attractive reaction between deuterium and a light isotope of helium known as helium-3.

Most big balloons are now filled with helium.

It also bodes ill for the prospect of fusion using helium-3, a rare helium isotope that is missing a neutron.

Liquid helium is most frequently provided to customers in a liquid container.

To begin with, the laser palette was rather limited: helium-neon and ruby lasers emitted red light, and others produced invisible infrared.

Inert helium, unlike hydrogen, is safer, but hydrogen has to be used for record launchings because of its greater lifting capacity.

GIANT inflatable helium balloons.

We have a helium nucleus and one electron.

Some of this energy congealed into particles, which assembled into light atoms like hydrogen and helium.

Just as in the sun, the chain reaction in the second stage fuses the hydrogen atoms into heavier helium atoms and releases vast amounts of energy in the process.

The pebble has about a one millimetre microsphere diameter. The coolant is in fact helium.

If helium loses on electron, what do we have?

Even if they are hit, though, they do not explode because the helium gas that keeps them airborne is not flammable.