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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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admissible evidence
admissible mark
admissible parameter
admissible plea
admissible sequence
admissible state semantics
admissible statistical hypothesis
admissible statistical phpothesis
admissible symbol
admissible variation
admissible witness
admission
admission against interest
admission air silencer
admission by investment
admission cam
admission delay
admission in pleading or evidence
admission line
admission of a debt
admission of facts
admission of guilt
admission of liability
admission of partner
admission passage
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更新时间:2026/6/10 16:08:28