黄土

We have not some certain appropriable method to solve this problem. More less job has been done on the loess nonlinear model.

本论文用正演和优化相结合的方式对黄土的非线性本构模型中的参数进行反演。

While the rate of the carbon index and carbon management index on the study plot to on the arborvitae is 28% and 43% respectively.

采用时空互代法，以黄土丘陵区纸坊沟流域生态恢复过程中不同年限的人工柠条和沙棘林为研究对象，选取坡耕地和天然侧柏林为对照，分析了植被恢复过程中土壤有机碳、活性有机碳、非活性有机碳及碳库管理指数的演变特征。

Brought forward and reasoned the forming mechanism of Maowusu sandy land. Based on the analysis of the development of Holocene rivers and related loess and windsandy geomorphology, the paper put forward the forming mechanism of Maowusu sandy land as follows: while the climate became dry, the exterior channels extended backwardly and cut through the remained lake system of ancient Hetao lake. This resulted in the rapid discharge of underground water. The vegetation living on this water resource was destroyed completely. Then the sand began to form.

对毛乌素沙地的形成机制进行了新的探索基于对过渡地带全新世河流及其相关的黄土和风沙地貌发育、土地利用变化等分析，提出毛乌素沙地的形成机制：在气候变干的同时，外流河谷溯源延伸，切穿了长城以北河套古湖残遗湖系，使地表地下水迅速外泄，原靠湖系水资源维系的生长在河套古湖湖滨沙堤形成的沙地上的非地带植被的生存条件被彻底摧毁，而起沙。

The adaptability of meadow brome is very strong in the most parts of the Loess Plateau.

牧场草在黄土高原大部分地区的适应性很强。

Six kinds of superior Leguminosae and grasses including Sweet pea , partridge pea , Utah sweet vetch , meadow brome , yellow bluestem and cambar bluegrass are introduced from the Western and Middle parts of USA with similar climate to the Loess Plateau according to the theory of similarity of climate. The experiments are focused on adaptability, regularity of growth and development, eco-economic values, and technique and model of cultivation of the introduced plants, following the procedure of primary test, regional test and production test.

按照&气候相似论&的观点，选择与黄土高原生态条件较为接近的美国中西部地区，引进了多年生香豌豆、美丽鹧鸪豆、犹他甜苕子、牧场草、黄兰沙梗草、康巴早熟禾等6种优良水土保持草本植物，按照&初选试验—区域性试验—生产性试验&的程序，对引进植物的物候、抗性、生长发育规律、生态经济价值、栽培技术等进行系统研究。

Also,it can burry sands and alkaline and im-prove farmlands. This paper sums up the existing me sures of diverting flood water forsiltation and suggests some countermeasures and causes of slow developme...

通过总结黄土高原地区现有的引洪漫地措施，提出了引洪慢地发展缓慢的原因及对策，探讨了本区发展引洪漫地的必要性和可行性。

You'll visit the famous Terracotta warriors, Banpo Museum and cliffy Mt.Hua in the eastern line, not only in the northern line can feel historical Huangdi Mausoleaum and the Loess Plateau of Shanbei area, but also visit most typical spots Qianling Tomb and Famen Temple in western line.

您将参观到东线著名的兵马俑，半坡，华山，不仅可以看到陕北黄土高原的黄帝陵还有西线具有代表性的景点，乾陵和法门寺。

In Loess area, block cloddy was universal existence in farmland surface. The physical and chemistry properties of block cloddy in plow layer were researched in this study.

针对黄土地区农田土壤普遍存在块状结构体的现象，用蜡封法研究了块状结构体的松紧度以及用EDTA滴定法测定了结构体中水溶性Ca(上标 2+)含量。

And loess mass structures are divided into four types as homogeneous, stratified, columnar, blocky and cloddy pulverescent structures based on the sedimentation characteristics of loess, features of structural planes and range of engineering loess mass.

依据黄土的沉积特点、结构面的特征和工程黄土体的范围将黄土体结构分为均质结构、层状结构、柱状结构、块裂结构和碎裂结构。

In the light of the shortages existing in the conversional sampling method for the self weight collapse settlement this paper probes into the sampling method for the calculation value of self weight collapse settlement in the collapse loess field from theory and practice .

针对常规的自重湿陷量取值方法存在的不足，从理论与实际两个方面探讨了湿陷性黄土场地自重湿陷量的计算值的取值方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。