stratification [ˌstrætəfɪˈkeʃən]

例句:

• She was concerned about the stratification of American society.
  她很关注美国社会的阶层分化。
  
• Some stratification exists in the spray produced by any liquid propellant injector.
  由任何液体推进剂喷注器所产生的喷雾都存在某些成层现象.
  
• Stratification in polar waters normally is weak and transient.
  极地水域的成层性是微弱而暂时的.
  
• For the data to be valid there would have to be stratification.
  来自SA
• Concerns about the Internet causing social and intellectual stratification are not new.
  来自FORBES
• Helium stratification could be separating the core's fusion into several individual solar furnaces.
  来自SA