The stability of spatial structure of soil type declines from South China to Northeast China, but rises from the southeast to the northwest in the Qinghai-Tibet Plateau.
随着我国土壤类型由南向东北的变化，各土壤类型斑块镶嵌结构的稳定性指数总体变小；
The pile-plank structure is a new-type structure of ballastless truck on soil subgrade, and the design and calculation of the pile-plank structure are still immature.
桩板结构路基是土质路基上无碴轨道的一种新型结构形式，其设计及计算还不成熟。
The type of soil body structure is main factor that affects the sediment and deformation of a highway foundation.
土体结构类型是制约公路路基沉降变形的主要因素。
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