Estratificar in english

Stratify

pronunciation: strætəfaɪ part of speech: verb
In gestures

estratificar = stratify ; layer. 

Example: The accuracy of the study was ensured by stratifying the sample population and by performing tests for statistical significance.Example: For future metacatalogues to be successful, methods must be developed to use all existing organizational tools by layering, exchanging and translating data within a loosely coupled organizational system.
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