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单词 pitchblende
释义

pitchblende

/ˈpɪtʃblend/
noun
mass noun
a form of the mineral uraninite occurring in brown or black pitch-like masses and containing radium
沥青铀矿。
词源
late 18th cent.: from German Pechblende, from Pech 'pitch' + Blende (see BLENDE).
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更新时间:2025/1/23 8:39:24