It's an 8 - to 12-inch layer of dirt impregnated with hydrogels, along with organic agents that nourish the natural bacteria in the soil.
它是一个由8 - 12英寸的一个充满水凝胶的泥土层，还有可以培养土壤中自然菌的有机处理剂。
In the mesh cage above, spread a layer of soil, can grow grass; naturally settling dust, the natural growth of weeds.
在格宾网网箱上面，铺撒一层土，可以生长草；自然也会沉降尘土，自然生长杂草等。
The study reveals that the formation of dried soil layer is mainly caused by natural factors due to the reduction of precipitation and gravitational water.
研究表明，土壤干层的形成主要是自然原因造成的，是降水量少决定的重力水带分布深度小引起的。
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