protium
Relating to phylobiogeography
(physics) The lightest and most common isotope of hydrogen, having a single proton and no neutrons: ¹₁H / An atom of this isotope.
(grammar) Of or pertaining to a grammatical form or construction that expresses the individuation of a single referent from a mass noun.
A state of Palau
その試料には水素の最も軽く最も一般的な同位体(¹₁H:水素‑1)が高濃度で含まれており、反応速度に大きな影響を与えました。
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