strate词根

应该是strat词根。

strat=spread out 表示扩散，引申为层次 strata n 层，地层（stratum的复数，strat+um层层扩散层） stratify v 使成层，使分层 prostrate v 使俯卧，使沮丧（pro前+strate前[后]回一贯层次上俯卧）。

An Effective Method for Relative Depth Correction based on Analysis of Strata Sequence.

一种基于层序分析的相对深度校正方法。

Analysis of the Field Monitoring of Roof Strata Displacement in Deep Mining.

深部开采上覆岩层移动的现场监测分析。

The Application of Classified Direction and Stratified Teaching in PE Teaching.

体育教学中分类指导与分层教学的应用。