Translation guide
Heavy hydrogen refers to deuterium, an isotope of hydrogen. In Japanese, it is primarily expressed using scientific terms.
The standard scientific term for the hydrogen isotope with one proton and one neutron.
The standard Japanese term for deuterium, used in chemistry and physics.
The literal translation of 'heavy hydrogen', less common than the specific term.
Deuterium is an isotope of hydrogen.
Katakana loanword for deuterium, common in scientific contexts.
Deuterium is used in nuclear fusion.
Heavy hydrogen is heavier than normal hydrogen.