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Pr.

中文翻譯：

【醫】 老視, 棱晶, 稜鏡, 鐠(59號元素)
Pr.英文字典

英文解釋：

名詞 pr.:

  1. a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process
    同義詞：praseodymium, Pr, atomic number 59
  2. a self-governing commonwealth associated with the United States occupying the island of Puerto Rico
    同義詞：Puerto Rico, Porto Rico, Commonwealth of Puerto Rico, PR
  3. a promotion intended to create goodwill for a person or institution
    同義詞：public relations, PR

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