libration

US [laɪb'reɪʃənz]
UK [laɪb'reɪʃənz]
  • n.振动；平衡；【天】天平动
Plural Form：librations  

E-C

E-E

Web Definition

n.
1.
振动,摆动;平衡
2.
【天】天平动

Sample Sentence