Stratification
01
the process of arranging people into social classes or ranks
例子
Industrialization led to the stratification of urban society.
Sociologists study the stratification of wealth and opportunity.
02
the practice of placing seeds in moist sand, sawdust, or peat moss to preserve them or encourage germination
例子
Apple seeds require stratification before they will sprout.
Stratification improves the germination rate of cold-climate species.
03
an arrangement in distinct layers
例子
The geologist studied the stratification of sedimentary rocks.
The lake 's water showed clear thermal stratification.
04
the process of forming or depositing in layers
例子
The river delta shows stratification of silt and sand.
Sediment stratification occurs over thousands of years.
