释义 |
atomic number 91 ThesaurusNoun | 1. atomic number 91 - a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into leadprotactinium, protoactinium, Pametal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
atomic number 91
Synonyms for atomic number 91noun a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into leadSynonyms- protactinium
- protoactinium
- Pa
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