“actinium series”的概念、定义、翻译、参考文献-科学参考

单词	actinium series
释义	actinium series Physics See radioactive series. Chemistry See radioactive series. Geology and Earth Sciences See decay series.
随便看	directed set directed tree direct feedback direct-gap semiconductor direct investment abroad direction directional antenna directional coupler directional data directional data(directional statistics) directional derivative directional fabric directional filter directional relay directional selection directional solidification direction angles direction cosines direction fields direction finding direction keys direction of fit direction ratios direct isometry directive

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