relative atomic mass
(historical) The French paramilitary force in Vichy France from 1940-1944 used to fight against internal dissent.
A surname from Arabic.
(physics) The ratio of the average mass per atom of the naturally occurring form of an element to 1/12 of the mass of a carbon-12 atom. Symbol Aᵣ; abbreviation RAM or r.a.m. For elements with several isotopes, the most stable isotope is treated as the representative.
plural of aum
学生たちは試料の相対原子質量を求めるために同位体の存在比と原子質量を比較した。
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