rock unit

US 
UK 
  • un.岩石地层单位
  • Web岩石单位
un.
1.
岩石地层单位

Sample Sentence

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