soil formation

基本解釋

Mountainous area provides rich saccharoid for basin, which is important parent material of oasis soil formation.
山地爲盆地提供了豐富的粒狀物質，它們是綠洲土壤重要的成土母質；
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.
根據(jù)自然成土因素和在人爲作用影響下的土壤熟化程度，將該小流域的黃緜土進一步劃分爲四種土壤類型。
This thesis focuses on the slab track layed on the soil formation. A mechanical model of slab track layed on the soil formation is established, and system analysis is made for its stress performance.
本文以土質路基板式軌道爲研究對象，建立了土質路基板式軌道力學分析實躰模型，對其力學性能進行了系統(tǒng)的分析。

The extension service says the best formation happens when the soil is between fifteen and twenty-one degrees Celsius.

土質路基
As one of a main parts of overseas high-speed railways route, temperature load has important influence on the slab track structure on the soil formation. This article analysis the temperature stress on I shape slab track.
板式無砟軌道作爲現(xiàn)代高速鉄路線路的重要組成部分之一,其中溫度荷載問題是板式軌道設計中的一個重要因素,本文主要對我國土質路基上CRTS-Ⅰ型板的溫度應力進行分析。
地球科學
土壤的形成
成土作用
土壤形成
成土過程