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词汇
protactinium
释义
protactinium
/ˌprəʊtækˈtɪniəm/
/ˌprəʊtækˈtɪniəm/
n
① 【化】镤(一种放射性稀金属元素;符号Pa)
同义词
Pa
atomic number 91
protoactinium
词路径
entity
physical entity
matter
substance
chemical element
element
metallic element
metal
protactinium
protoactinium
Pa
atomic number 91
上位词
metal
metallic element
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更新时间:2024/11/10 7:49:10