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So in the absence of this inert gas here, I just have the pure substance.
如果没有惰性气体，我只有纯物质。
youdao
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The star indicates a property of a pure substance or a collection of pure substances.
星号表示纯物质或纯物质集合的性质。
youdao
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The star indicates a property of a pure substance or a collection of pure substances.
星号表示纯物质或纯物质集合的性质。
youdao