“radioactive standard”的概念、定义、翻译、参考文献-科学参考

单词	radioactive standard
释义	radioactive standard Encyclopedia 理学原子核释 radioactive standard放射性标准经过精确测定、比对、公认的，可作为放射性活度计量标准的放射性物质或制品。放射性标准以单位时间内发生的核衰变数来计量，单位为贝可（Bq）。 Chemistry ＞放射化学与辐射化学＞基础放射化学＞释义 radioactive standard放射性标准
随便看	Probit回归模型 problem problem analysis problem analysis model problematic problematical problem-based learning problem calculus problem centrality theory problem child problem complexity problem definition problem definition, analysis and explanation problem definition method problem-focued coping problem for determining solution problem frame problem frames method problem handling system Problem novels problem of a hundred chickens problem of allocation problem of brachistochrone problem of circumference in equal parts problem of construction with ruler and compass

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