各层网格间距沿水流方向逐渐增大的翻译：The grid spacing along the direction of flow increases 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Layers of the grid spacing is gradually increasing along the flow direction

The grid spacing along the direction of flow increases

Each mesh spacing increases gradually along the fluent direction

The grid spacing layer direction of water flow along gradually increase

The grid spacing along the direction of flow increases