底土 meaning in English
bottom soil
natural soil
pan
root clay
seat clay
seat earth
su oil
substratum
underclay
underearth
underground
underlying ground
undersoil
Examples
- In a solid which is moderately low in available zinc, deep cuts may expose zinc-deficient subsoils .
土壤中含有效锌转低时，深层耕翻会使缺锌的底土暴露出来。 - In loessal regions and alluvial valley fills of the western united states, both surface soil and subsoil are commonly friable .
在美国西部黄土区和冲积河谷里，表土和底土一般是容易破碎的。 - Formation subsoil ripping
翻松底土 - Analytic calculation of bottom soil resilience caused during excavation of a long strip foundation pit
长条形深基坑开挖引起基坑底土体的回弹解析理论计算 - Soils start to dry from the surface but subsoils may remain wet so that rice roots can absorb available water
土壤由表面开始干燥，但底土潮湿，因此，水稻能吸到有效水。