soil-forming process

The process of temperature decrease is the key to determine the safe time of shutdown in the whole pipeline due to overhead pipeline without soil thermal storage to slow up heat dissipation.

由于架空原油管道没有土壤的蓄热来减缓管内原油的热散失，架空原油管道的温降过程往往成为决定整条管道允许停输时间的关键。

A lot of study on N2O emissions in the process of crop production in the farmland system in recent years, but the study of vegetable soil N2O emissions less, especially in the central region and even more rarely.

近年来关于农田系统粮食作物生产过程N2O排放的研究很多，但是菜地土壤N2O排放的研究较少，尤其是在华中地区更为少见。

Starting from the thermomechanics principles, a proper form of energy dissipation function in the process of soil deformation was introduced, from which the yield locus and flow rule in dissipative stress space were deduced.

从热力学定律出发，介绍了土体受力变形过程中能量耗散函数的合理表达形式，据此导出耗散应力空间中的屈服函数及流动法则。

Due to extent areas in medium-large basins, their erosion, transport, sediment process crisscrossed, and natural processes in basin rounded soil and water loss system became complicated, time and spatial variability of sediment yield factors enhancing.

中大流域由于流域面积很大，使得流域的侵蚀、输移、沉积过程交错，流域的这一完整的水土流失体系的自然过程复杂化，侵蚀产沙因子时间和空间的变异性很大。

Based on the balance of energy, the mathematic model of soil cool thermal storage and release process of inner and outer pipe in the buried pipe bundle was established.

并在能量平衡的基础上，建立了埋管管束内层及外层盘管蓄冷、释冷过程的数学模型。