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单词
carbon 13
释义
carbon 13
noun
:
a heavy isotope of carbon having the mass number 13, constituting about 1/70 of natural carbon, and used in tracer studies in chemistry and biology
— symbol
C
13
or
13
C
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enviable
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envies
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environment
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environmental
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environmentalist
environmentalistic
environmentally
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envisagement
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更新时间:2026/4/20 20:52:53