megacurie
... 中等重量核 medium-weight nucleus 百万居里 megacurie 百万死亡 mega-death ...
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居里夫妇所发现的物质就是镭，看起来它就像普通的食盐一样，而它的放射性却铀要大一百万倍。
The matter that the Curies had discovered was radium. It looked like ordinary salt, but was one million times more radioactive than uranium.
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