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, 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
3. a promotion intended to create goodwill for a person or institution
   同義詞：public relations

Pr
NONE（無詞性）
The symbol for the element praseodymium
元素praseodymium的符號

Pr
Pr 2
abbr.（略語）
Propyl.
Propyl.
Bible Proverbs.
【圣經(jīng)】 格言，警句