Ra¹[rɑ:; rɔ:]

• n.【埃及宗教】太阳神(古代埃及人崇拜的宇宙创造者)[亦作Re]

Ra²

• 【化学】镭(radium)的符号

RA

• abbr.
  • radar altimeter
  • radioactive
  • radius of action
  • random access
  • rate of application
  • read amplifier
  • Rear Admiral
  • refer to acceptor
  • Regular Army
  • reliability analysis
  • Research Association
  • residence advisor
  • residual air
  • rheumatoid arthritis
  • right arch
  • right ascension
  • right atrium
  • Royal Academician
  • Royal Academy(of Arts)
  • Royal Artillery

ra

• abbr.range