pr.

• abbr. 双，对，套(pair)

英英释义

名词 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

2. a self-governing commonwealth associated with the United States occupying the island of Puerto Rico

3. a promotion intended to create goodwill for a person or institution