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来源:雅诚德英语网
Nitrogen is the most common gas in the earth's atmosphere, and at a nuclear plant the main radioactive form is known as nitrogen-16.
氮是地球大气中最平常的气体,它在核电站中的主要放射性形式被叫做氮16。
Nitrogen is the most common gas in the earth's atmosphere, and at a nuclear plant the main radioactive form is known as nitrogen-16.
氮是地球大气中最平常的气体,它在核电站中的主要放射性形式被叫做氮16。