查询词典 soils

The coarse-grained soils have the some good engineering properties and have been applied widely in the engineering construction.

粗粒土具有良好的工程特性，广泛应用于当前的工程建设中，而且应用范围日益扩大。

The study on the stress-strain relationship of coarse-grained soils become important, especially the characteristics of deformation and strength in the static and dynamic load process.

为了适应土工建筑物应力和变形分析的需要，粗粒土的应力～应变关系成为岩土力学研究的重点内容之一，特别是复杂应力状态下的静、动力变形强度特性已成为学术界和工程界十分关心的一个重要课题。

For example, in colder soils of the American corn belt and drier areas of the Argentine pampas, banding is the preferred method for phosphate fertilization.

如在美国&玉米带&的寒冷地区和阿根廷的干旱热带草原地区，条施是磷肥施用的优选方法。

It has been proved that there are two types of corn-growing soils, balanced or unbalanced in soil nutrient supply-Therefore it is necessary to recommend proper nutrient ratios to achieve high yield of corn.

以前的研究已认识到种植玉米的土壤具有平衡与不平衡的土壤养分供应类型，因而其高产施肥需要相应的养分配比。

Some of this money ($63m) will be spent training more crop scientists and breeding new seed varieties suited to sub-Saharan Africa's parched climate, denuded soils and stubborn pests.

其中的一部分资金（6300万美元）将被用来培养更多的谷物科学家和培育更多能适应撒哈拉非洲以南地区干燥气候、荒芜土壤和猖狂虫害的新品种种子。

The rigorous solutions are derived for the consolidation problems of soils with drain wells through soft clay layer by use of the Merchant model under both free strain and equal strain conditions and in consideration of the effects of both well resistance and smear action.

本文基于Merchant模型分别推导了自由应变条件和等应变条件下打穿软粘土层的竖向排水井地基粘弹性固结问题解析解，同时考虑了井阻和涂抹作用的影响。

Sandy soils contain at least 85% sand and not more than 10% clay. They are light and drain well. However, retention of nutrients and water is poor.

在沙质土壤中含有85%以上的沙和近10%的粘土，因此具有质量轻，排水优良的特点，但对于营养物质与水的保持力就较低。

In order to analyzes the soil deformation mechanism under the impact load of the step-bit, the finite element model of impact and displacement drilling with down the hole hammer is established on the basis of adopting Drucker-Pager yield criterion, taking soil as DP materials and simulating the drilling process by applying the impact load on soils.

为了分析阶梯钻头冲击挤密作用下土体的变形机理，将土体视为DP材料，服从Drucker-Prager屈服准则，通过钻具与土体之间的接触以及施加冲击载荷来模拟钻进过程，建立了潜孔锤冲击挤密钻进的有限元模型。

The study showed that there were consistent change of total N and available N contents with alfalfas growing for different lengths of time in 0-1000 cm soil. Soil total N and available N contents decreased with soil depth, and tended to remain relatively constant in soils deeper than 350 cm below soil surface.

结果表明，在0-1000 cm土层，不同生长年限苜蓿草地土壤全氮与碱解氮含量均呈现规律性的变化，即随土层深度的增加，全氮及碱解氮含量下降，350 cm土层以下，变化趋势平缓。

Known for tolerating poor soils and cold climates, aspens flash yellow against their white bark in an unmistakable sign of coming winter.

已知的为容忍土地贫瘠和气候寒冷，白杨树闪光黄色对它们的白色树皮在即将来临的冬天的一个明确无误的符号。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。