Locke had seized on the essential concept of terroir, the combination of soil, subsoil, drainage and microclimate which provide the conditions for the production of fine wine.
洛克抓住了“风土”的核心概念，它综合了土壤、底土、透水性以及为生产优质葡萄酒提供条件的微气候。
In drainage of agricultural lands, a filter or gravel envelope is used to prevent the entrance of fine sand and silt into the drains.
在农田排水中常常采用砾石或过滤层来防止粉细砂和泥沙进入排水沟。
Both saturated-unsaturated flow drainage experiment without the fine sand layer on the top of the coarse sand and air-water two-phase flow drainage experiment with the fine sand layer were performed.
进行了粗砂上部没有细砂层的均质砂柱的饱和-非饱和流排水实验以及粗砂上部存在细砂层的水气二相流排水实验。
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