| 单词 | port radium |
| 释义 | Port RadiumPort Radium,mining village, N central Northwest Territories, Canada, on Great Bear Lake. The mines were discovered in 1930 and yielded deposits of pitchblende, from which much radium was produced. During World War II the mines were expropriated by the Canadian government when scientists found that these ores contained a rich store of uranium oxide, a source of atomic energy. They were exhausted and closed in 1960. |
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