surface mixed layer

基本解释

The ocean surface mixed layer can be approximated to a vertical uniform layer on temperature, salinity and current.
海洋的上混合层可近似为温度、盐度和余流的垂直均匀层，如同大气的充分混合层一样。
Soil retention capacity of surface layer is the best in the mixed forest, while differences are little in other forests.
混交林表层土壤蓄水功能最好，其他林分各层次差异较小；
The ocean surface mixed layer plays an important role in the processes of the exchange of heat and momentum between the upper ocean and the atmosphere.
海洋上混合层在大气和海洋之间的水汽、热量和动量的交换过程中有着重要的作用。