Rr

US 
UK 
  • abbr.(=rear)
  • Web相对危险度(relative risk);呼吸频率(respiratory rate);相对风险
abbr.
1.
(=rear)

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard