英和和英

a nitrometer

a hydrogen atom

an atom of hydrogen

a carbonaceous substance

sulfuretted hydrogen

“H” is the symbol of hydrogen.

a gaseous element called hydrogen

ionic hydrogen

atomic hydrogen

a molecular component ion called a hydrogen ion

a condition of containing many hydrogen atoms

carburetted hydrogen―hydrocarbon

an isotope of hydrogen, called deuterium

remove hydrogen from

a hydrocarbon, called methane

a radioactive isotope of hydrogen

liquefied nitrogen

hydrogen sulfide

a hydrocarbon called {synthol}

the circulation of nitrogen

The atomic number for hydrogen is 1.

a thermonuclear bomb

The hydrogen binds the oxygen

hydrogen (mon)oxide

inject hydrogen into the balloon

a mixed gas comprising equal amounts of chlorine and hydrogen

carbon and hydrogen

The chemical symbol H expresses hydrogen.

The liquid hydrogen inside is as cold as minus 253 degrees Celsius.

large volumes of occluded hydrogen in palladium