coarse soil 中文意思是什麼
coarse soil
解釋
粗質土-
Based on the principle of significant effect of soil fertility factors on forest growth, soil physical factors ( natural water content, bulk density, total porosity, capillary porosity, aggregate degree, coarse silt and physical clay ), chemical factors ( om. total n, alkali - hytrolyzable n, total p, humus and ha / fa ) and biological factors ( urease, acidphosphotase, invertase and microbes ) were selected as evaluation index system of soil fertility. applying principal component analysis, soil ifi of subalpine coniferous forest was calculated
從土壤物理、化學、生物學三方面出發，建立了川西亞高山針葉林不同演替階段土壤肥力評價指標體系，應用主成分分析，計算出不同演替階段土壤肥力綜合指標值（ ifi ） ，各演替階段大小順序為： 10年生雲杉林地跡地原始林地次生樺木林地30年生雲杉林地20年生雲杉林地50年生雲杉林地60年生雲杉林地40年生雲杉林地。 -
The organic matter, total n, hydrolytic n were increased, then reduced with the increase of abandoned time. the loss of organic c got up to 59. 4 % in abandoned land. in 0 - 20cm, the sand content of 0. 25 - 0. 05mm was increased gradually, the average content of sand in the abandoned land was up to 76. 84 %, the sand contents of silt and sand was gradually reduced, the soil mechanic compose became coarse
隨撂荒年限的增加，土壤有機質、全氮、堿解氮等主要養分均表現出先降低后增加的趨勢；撂荒地有機碳的損失平均達到59 . 4 ；在撂荒地表面0 - 20cm范圍內， 0 . 25 - 0 . 05mm粒徑的砂粒含量逐漸增加，各撂荒地砂粒平均含量達76 . 84 ，粉粒和粘粒含量逐漸降低，土壤機械組成出現粗化現象。 -
Red desert soil a type of coarse soil rich in salts and lime but poor in humus, formed in hot deserts
紅漠土：一種粗糙的富含鹽類、石灰，但缺少腐殖質的土壤，多在熱帶沙漠中形成。 -
The spreading gradation gravelly soil is a kind of clayey coarse - grained soil. it ' s also a soil - rock mixtures. it ' s often divided into fine material and coarse material by the save of 5mm and the granutometric composition affects its project characteristics directly
寬級配礫質土是一種粘性粗粒土，是天然土石的混合料，它通常以5mm為界被分為粗料和細料兩部分，顆粒組成是決定寬級配礫質工工程特性的主要因素。 -
The spreading gradation soil analyzed in the article is a cohesive coarse soil. it ' s a kind of crude soil - rook mixtures. it ' s often devided into fine material and coarse material by the save of 5mm and the charge of the two contents affects its project quality directly
本論文研究的寬級配礫質土指的是黏性粗粒土，是一種天然的土石混合料，其顆粒組成通常以5mm為界分為粗料和細料兩部分，這兩部分組成含量的變化直接影響到它的工程性質。 -
Secondly, essential law of soil crust formation was obtained : when coarse sand exceeded 50 %, soil crust dominated by depositional crust would be formed. when soil clay exceeded 30 % and soil aggregated degree was less than 140 %, soil surface tended to form soil crust dominated by structural crust
四、土壤聚合劑聚丙烯酰胺（ pam ）對控製表土結皮形成的效果： pam能控製表土結皮形成的主要原因是， pam能改善土壤的結構狀況，顯著提高土壤團聚體的穩定性，從而有效的抑制了表土結皮的形成。 -
The research showed that pam could improve soil structure, and greatly increase the stabilization of soil aggregates, so soil crust development would be decreased. fifthly, soil grain that controls rainfall splash erosion was obtained, the influence of soil clay was very great during initial stages of rainfall. with rainfall going on, soil coarse sand and fine sand would control the splash erosion
五、控制土壤濺蝕的主要土壤粒級：在降雨初期土壤的的粘粒對濺蝕速率的影響較大，隨著降雨歷時的延長，土壤中的細砂和粗砂成為濺蝕速率影響較大的因子；六、對土壤濺蝕影響較大的土壤結構特徵因子：降雨5分鐘時，土壤的滲透系數對濺蝕速率的影響較大，隨著降雨的繼續進行，土壤的團聚度一直對土壤濺蝕速率影響較大。 -
4. in the process of spontaneous vegetation recovery of blown sand soil, coarse sands ( l - 0. 25mm ) content gradually lower, middle sands ( 0. 25 - 0. 05mm ) and fine sands ( 0. 05 - 0. 02mm ), silt, clay content gradually higher in mechanical composition
4 、在自然植被恢復過程中，風沙土機械組成中砂粒含量變化表現為粗砂含量的降低，中砂和細砂含量的升高，砂粒整體含量降低。 -
Research on affecting factors of rising height of capillary water on coarse grained soil
影響粗粒土毛細水上升高度的因素研究 -
Coarse texture soil
粗質地土壤 -
Coarse grained soil is composed of sand and gravel, stone residual, blasted stones etc., which has a characters of less cohesive force among grains and strong ability of water penetration. it is a kind of soil of loose grain structure with better utilization properties in the engineering
粗粒土是指砂礫石、砂卵石、石渣、爆破開採的石料等粗顆粒土石混合料，具有粗顆粒間粘結力小、透水性強的性質，是一種鬆散的顆粒狀結構，具有良好的工程使用性能。 -
On the basis of the analysis of the test data, the additional force linearly increased with variation of water pressure in the aquifer, and increased with the increase of the depth and with the content of coarse soil particle in the overburden layer
試驗結果表明：豎直附加力隨含水層降壓量的增大而線性增加，隨深度增大而增大，隨土層中粗顆粒含量增多而增大。 -
The simulated latent heat of coarse soil is smaller, and surface temperature and sensible heat is larger than the results of the control run
粗糙土壤，反照率大，造成地面吸收短波輻射減少。粗糙土壤用於蒸發的潛熱減少，地溫升高，感熱大。 -
Then, using the large - scale coarse grained soil test system, the relative density and direct shear characteristics of sand - gravel mixtures in different size distribution were tested. and the soc affecting mechanism derived from non - uniform granular material was discussed. the phenomenon can be observed that, along with the increase of non - uniform degree, the accumulate structure will become more complex, and the sliding resistance among sands will grow accordingly
在此基礎上，利用大型粗顆粒實驗系統，測定不同非均勻系數沙石材料的相對密度和直剪特性，探討了顆粒非均勻程度對自組織臨界性影響的具體物理力學機制：隨著非均勻度的增大，散粒堆積體的顆粒結構空間分佈堆積方式的多樣性增大，顆粒滑動的摩擦耗能增加。 -
2 the soil is course grained if it contains less than 50 % fines. follow the procedures for identifying coarse - grained soils of section 15
1如果土包含50 %或更多的細粒，它就是細粒土.按照14部分中的程序來鑒別細粒土 -
Coarse soil is easy to lost moisture and get little water in soil
粗糙土壤失去較多的水分，從降水事件中得到少的水分。 -
This article emphasize on further realizing the engineering properties of coarse grained soil through test and research, enabling it to serve the society in a better way
如何通過試驗研究，進一步認識粗粒土的工程性質，更好地服務于土木工程建設是本文研究的重點。 -
This article mainly emphasize on the classification of coarse grained soil from the viewpoint of engineering application ( content of coarse grains ), vibrating method is introduced in the shaping. meanwhile, research is made to the water stability and shear strength. through research, following conclusions are obtained : coarse grained gradation is the main factors to determine its shear strength, when the coarse grains content is over 70 % or around, the maximum shear strength appears : the grains itself have a bigger effect on the shear strength
以往對粗粒土的研究方法多採用擊實法，很少有人研究其抗剪強度特性，本文主要從工程應用的角度（粗粒含量）對粗粒土進行工程分類，成型方法採用振動法，同時對水穩定性、抗剪強度特性進行研究，通過研究得出以下結論：顆粒組成級配特性是決定其抗剪強度的主要因素，當粗粒含量在70左右時，抗剪強度最大；顆粒本身的特性對抗剪強度影響較大，顆粒越堅硬、大小顆粒相差越大、越不均勻、顆粒形狀越呈稜角狀、填築密度越大，抗剪強度就越高；含水量對抗剪強度的影響很小，可以忽略不計。 -
It puts forward to differentiate the coarse and fine sand and then measure the sediment yield of total precipitation erosion by using the combined method of drying and pycnometer in the light of the soil mixed with large quantity of coarser sand in the model tests
針對模型土壤中夾雜著大量粒徑較粗的泥沙顆粒的試驗，提出進行泥沙粗細分層，然後採用烘乾法和密度瓶法相結合的方法來測量次降雨侵蝕產沙量。
分享友人