最終更新日：2024/08/01
(mineralogy) A hard, corrosion-resistant alloy of osmium and iridium, used in pen nibs.
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osmiridium
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(mineralogy) A hard, corrosion-resistant alloy of osmium and iridium, used in pen nibs.
osmiridium
DiQt（ディクト）
無料
★★★★★★★★★★
