samarium
In a way that is not soft.
exposure to the action of chemicals
present participle of harrage
A chemical element (symbol Sm) with an atomic number of 62, a moderately hard silvery metal that slowly oxidizes in air.
研究者たちは、元素記号Sm・原子番号62の希土類金属であるサマリウムを用いて合金の磁気特性を向上させた。
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