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protactinium
protactinium
详细解释:
n. 镤
【化】 镤Pa
【医】 镤(91号元素)
词型变化:
简写符号:Pa
英语解释:
名词 protactinium:
a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead同义词:protoactinium, Pa, atomic number 91
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