Akhtenskite (Manganese Smoker) is a mineral with the chemical formula of MnO2 that was named after the Akhtensk deposit. The deposit can be found in Russia, where it was first discovered and noted in 1979.
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。