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A triclinic hydrated oxide of calcium and vanadium occurring as aggregates of opaque black prismatic crystals.
1920s. From melano- + vanad- + -ite.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。