crust soil 中文意思是什麼

crust soil 解釋
結殼土壤
  • crust : n 1 麵包皮 （opp crumb）；乾麵包片；生活口糧，糊口之資。2 外皮，殼；〈美國〉雪殼；【地質學；地理...
  • soil : n 1 泥土，土壤；土質。2 土地，國土。3 滋生地，溫床。4 農業生活，務農。n 1 臟東西，污物，污穢，污...
  1. It is important that study gamma - ray spectrometry of field rock and soil in the earth ' s crust. its energies range between 30kev and 3000kev, where there is much information of natural radioactive nuclides, such as uranium, thorium, potassium, and information of artificial radioactive nuclides, such as cesium, americium, cobalt, and information of the results in interaction between gamma - ray and earth ' s crust

    研究表明：野外地面射線能譜測量主要研究地殼巖石土壤中產生的能量約為30kev 3000kev的射線，這裡面包含著鈾、釷、鉀等天然放射性核素信息，核工程活動產生的大量人工放射性核素信息以及射線與地殼相互作用產生的相關信息。
  2. The crust seals the soil and prevents the evaporation of water.

    這層表皮把土壤封閉，防止水份蒸發。
  3. Laterite a hard crust that may form on the surface of the soil in tropical regions with alternating wet and dry seasons

    紅土：在熱帶地區，土壤表面由於干濕交替而行成的具有堅硬外殼的一種土壤。
  4. This crust dramatically changes the rate at which water filters into the soil.

    這層表皮顯著地改變了水份滲入土壤的速度。
  5. On the basis of analyzing infiltration process to different soil and water conservation tillage measures type, a increasing infiltration r ates model for different soil and water conservation tillage measures type by using water balance equation is woke out. 4. accumulation depth and soil crust have a better affect to soil initial stage infiltration rates and a little affect to soil stable infiltration rates

    （ 4 ）積水深度和土壤結皮對初始入滲速率影響較大，對穩定入滲速率影響不大，隨著積水深度和結皮厚度的增大，這種情況尤為顯著，如在積水深度為5cm和3cm情況下，穩定入滲速率在黃土高原溝壑區分別為0 . 57mm min和0 . 56mm min ，在黃土丘陵溝壑區分別為0 . 94mm min和0 . 93mm min ，兩者相差甚微。
  6. Study on crust development and its influences on soil physicochemical properties in horqin sand

    科爾沁沙地結皮發育對土壤理化性質影響的研究
  7. 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。
  8. Pam treatment can prevent the disintegration of soil aggregates, even improve the structure of soils and prevent crust formation. pam, with high viscosity, can significantly increase water infiltration

    Pam具有良好的黏結力，能有效改良土壤的表層結構，維護了土壤孔隙連通性，增加土壤的入滲率。
  9. 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。
  10. On the basis of analyzing factor ( soil particle composition, soil bulk density, water stable aggregate content, antecedent soil moisture, slope gradient, rain intensity, accumulation depth and soil crust, soil and water conservation tillage measures ) affecting soil infiltration rates, several relation models was obtained ; analyzed in detail different soil and water conservation tillage measures intensifying infiltration rates, while there have the same rainfall condition, the increasing infiltration rates of contour tillage and artificial digging and artificial hoeing in gully areas of loess plateau are 67 % and 41 % and 29 % ; the increasing infiltration rates in hilly areas of loess plateau is 45 % and 22 % and 14 %

    在相同的降雨條件下，黃土高原溝壑區等高耕作與直線坡相比，可提高入滲67 ，人工掏挖可提高入滲41 ，人工鋤耕可提高入滲29 ；黃土丘陵溝壑區等高耕作可提高入滲45 ，人工掏挖可提高入滲22 ，人工鋤耕可提高入滲14 。並根據黃土高原超滲產流的概念和水量平衡方程，建立了不同水土保持耕作措施強化入滲速率模型。
  11. The analysis on the mechanism of anti - wind erosion of soil crust

    土壤風蝕與植被防護研究
  12. With continuing of rainfall, the influence of soil - aggregated degree was very great. seventhly, mutual effect between soil crust and raindrop splash was studied, the result showed that splash erosion rate was greatly increased, once soil surface crust was formed

    七、表土結皮形成對土壤濺蝕的影響：隨著表土結皮的逐漸形成，土壤抗侵蝕能力增強，土壤濺蝕速率急劇減小。
  13. Through rainfall simulating under laboratory, and making slice of sampling, the project researched in the soil crust development, and studied the dynamic rule of erosion factors which were raining and soil erosion factors during soil crust development. in the same time, the research was to find the critical condition of all factors in the process of soil crusting, and to filter the critical factor that could affect soil surface crust

    本文採用人工模擬降雨方法，通過采樣製作土壤切片，觀察分析表土結皮在不同條件下發育的微形態特徵，研究降雨、土壤等侵蝕產沙因子在表土結皮發育過程中的動態響應規律，界定表土結皮發育過程中各因子的臨界條件，篩選有關土壤顆粒組成、結構特徵等物理化學性質對表土結皮形成影響的關鍵因子。
  14. Soil crust, a common phenomenon for many soils worldwide, plays an important role in water and soil losses. soil seals and crusts can significantly reduce soil infiltration rate and subsequently lower the utilization of water resources, increase runoff, and induce heavier soil erosion

    造成水土流失一個極其重要的原因是降雨引起的土壤表面結皮，降低了土壤的入滲性能，增加丁土壤表面的徑流，加大了土壤侵蝕。
  15. The objectives of this study were : i ) to understand the mechanism of applying polyacrylamide ( pam ) to control crust formation, to increase infiltration and reduce soil erosion ; and ii ) to quantify the dynamics of soil erosion processes with rare earth elements ( ree ) tracers

    本文的目的是研究利用聚丙烯酰胺（ pam ）作為土壤改良劑來抑制土壤表面結皮，增加降水入滲，減少土壤表面徑流，降低土壤侵蝕；同時採用稀土元素（ ree ）示蹤土壤侵蝕的動態過程，研究土壤侵蝕的動力學機理。
  16. Even without these man made sources of radiation, exposed to natural background radiation. the rocks and soil of the earth s crust contain variable amounts of natural radioactive elements such as uranium and thorium. this varies with geography - for example the hottest places in britain are cornwall and around aberdeen

    就算排除人為輻射，人類會在天然環境中接觸到本底輻射，如地球外殼的巖石和泥土含有份量不同的輻射元素如鈾和釷，而份量視乎地理位置，如英國的康瓦爾和阿伯丁郡最為熱點。
  17. The aim of this research was to confirm the rule of soil crusting and the factors affecting the process of soil crusting, and to analyze the relationship between the development of soil crust and rainfall splash erosion, furthermore to study the effect of soil crust on the process of erosion. we hope to provide scientific bases for soil erosion

    本研究的主要目的是探明表土結皮的發育規律、影響因子，並且分析表土結皮的形成與土壤濺蝕的關系，以及表土結皮的發育與坡面侵蝕過程的交互動態影響作用，最終為坡面侵蝕研究提供科學依據。
  18. Scanning electric microscope ( sem ) photographs were used to examine the structure of surface soil experienced a rainstorm, for the purpose of understanding the mechanism of soil crusting. it approved that soil crusting consists of depositional crust and structural crust. the curves of infiltration with time revealed four stages of crust formation

    用電子掃描顯微鏡（ sem ）照片對比了土壤表面結構，分析了土壤的結皮機理，可以認為土壤結皮是由結構結皮和沉積結皮構成，入滲量與時間的歷時曲線反映了結皮的四個形成過程。
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