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钷
释义
钷【医】 florentium Il illinium Pm 钷(1)鉕pǒ(2)稀土族的一种金属元素,自然界中不存在其稳定的同位素,发现的钷为放射性形式,是铀的裂变产物,也可从中子照射制得,半衰期2.64年。表现出其它稀土元素的化学性质 [promethium]――元素符号Pm
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the gate of horn
the genital organs
the gentle craft
The George Washington University
the ghost of...
The gilt is off
the glimpse of the moon
the good old times
the great beyond
the Great Divide
the great fisher of souls
The grey mare is the better horse
the heart of a matter
the heavy yoke of public opinion
the heel of Achilles
the hell of it is...
the Holy Sepulchre
the hosts of heaven
Theiler
Theileria
Theileria annulata
Theileria dispar
Theileria hirci
Theileria parva
theileriasis
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更新时间:2025/10/24 3:55:07