性早熟也称为成土作用或幼体生殖。
根据自然成土因素和在人为作用影响下的土壤熟化程度，将该小流域的黄绵土进一步划分为四种土壤类型。
According to the natural factors of soil formation and the development, degree of soil, under the influence of human production activity, the Huangmian soils were devided into four types.
采用积分变换和传递矩阵方法，求解了成层土在内部环形荷载作用下的基本解；
The fundamental solutions for displacements and stress components of the layered soil due to unit internal ring loading are first derived with integral transforms and the transfer matrix method.
胶结作用是其具有较高的结构强度的根本原因，成土演化过程与红土有着“亲缘”关系。
It is typical strong structural soil with higher structural strength result from agglutination, and its pedogenic evolutionary process is similar to that of laterite.
岩溶作用决定了红粘土的成土早期和物质来源的特点不同于其它岩石形成的土类；
The karstification had decided the red clay characteristic in the early time in soil forming process and the matter origin is different from soil types formed by other rock series;
岩溶作用决定了红粘土的成土早期和物质来源的特点不同于其它岩石形成的土类；
The karstification had decided the red clay characteristic in the early time in soil forming process and the matter origin is different from soil types formed by other rock series;
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