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R英英释意- 查字库
首页英语词典RR英英释意

R

英 [ɑː] 美[ɑr]
  • n. 英语字母中的第十八个字母
  • abbr. 电阻(resistance);比率(ratio);医生处方(recipe)

英英释意


1. the length of a line segment between the center and circumference of a circle or sphere