单词:protactinium
音标:[.prәutæk'tiniәm] ;
n. 镤
[化] 镤Pa
[化] 镤Pa
n. a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
词型变化:名词复数形式 : protactiniums
【近义词】
- pa<口>爸爸
- protoactinium镤