孔隙度下降 的英文怎麼說

中文拼音 [kǒngxìdùxiàjiàng]
孔隙度下降 英文
porosity reduction
  • 隙 : 名詞1 （縫隙; 裂縫） crack; chink; crevice 2 （空閑） gap; interval 3 （漏洞; 機會） loophole; op...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 下 : 下動詞1. （用在動詞后,表示由高處到低處） 2. （用在動詞后, 表示有空間, 能容納） 3. （用在動詞后, 表示動作的完成或結果）
  • 降 : 降動詞1. （投降） surrender; capitulate 2. （降伏） subdue; vanquish; tame
  • 孔隙度 : amount of porosity
  1. With the development of human society, because of the lack of sustainable utilization consciousness, and the eager for quick success and instant benefit, the black earth suffered excessive cultivation and management, causing the reduction of its recycled ability, decrease in organic content, porosity ratio, fertility dropped and the properties of water retaining and water retention, which make the black soil harden and degenerate seriously

    但是隨著人類社會的發展，在缺乏保護和可持續利用意識、急功近利思想影響下，黑土遭到過度墾殖和掠奪式經營，人類對其活動范圍遠遠超過了其再生能力，導致有機質含量減少，肥力下降，孔隙比減小，保水持水能力降低，土壤板結，黑土嚴重退化。
  2. The paper can concern the soil ' s instantaneous fallout, soil ' s main settlement due to concretion, and the coactions of soil and pile by applying the contact surface to simulate the coactions. the paper can analyze the service behavior of reuniting foundation and the effect of the pile ' s intensity, length and distance. the paper is concerned with the stressing of pile and the arrangement of pile for the smaller cost to fit the subsidence of throughway

    通過有限元計算，分析了復合地基樁土工作性狀，分析了樁的剛度，長度，樁距對地基沉降及超孔隙水壓力的影響，並根據復合地基中樁的受力特點，提出合理的樁的布置方式，在滿足高速公路路面沉降要求的前提下，節省工程投資，加快建設進度。
  3. Using the rock resistivity meter with simulating in - situ conditions, the relations between rock resistivity and temperature were observed from 6 sandstone samples with different porosity and permeability, while samples were brine water - saturated and subjected to certain confining pressure. it is found that the resistivities of water - saturated rock samples decrease in the form of power expression with the temperature increase. although the resistivity of brine water decreases with temperature in the same rule, it can not entirely account for the decreasing of rock resistivity. the cementation factor

    利用模擬地層條件巖芯電阻率測量儀，對6塊孔隙度滲透率各不相同的砂巖巖芯，在一定圍壓條件下，巖芯完全飽和鹽水時，考察了巖芯電阻率隨溫度的變化。發現飽和鹽水巖芯的電阻率隨溫度升高，以冪函數形式下降。雖然巖芯中飽和鹽水的電阻率同樣隨溫度以冪函數形式下降，但巖芯電阻率的下降不能完全用巖芯飽和鹽水的下降表徵。
  4. Mongolica young stand, secondary natural forest, and the mixed forest of larix olgensis and fraxinus mandshurica rupr. countermeasures for controlling soil degradation were also recommended. the study got following results : ( 1 ) from young stand to mid - age of larix olgensis, with the closure of canopy and the decrease of undergrowth vegetation cover, soil acidity, enzyme activity, total inorganic phosphorus, available k, soil moisture and total porosity decreased significantly ; while soil organic matter content, humus component content, the amount of three main types of microbes, acid phosphatase activity, and bulk density in rhizosphere soil and non - rhizosphere soil increased with the increase of the amount of forest floor litter ; from mid - age stand to near mature stand, with the decrease of stand density and crown cover as well as the restoration of undergrowth vegetation after preliminary thinning, soil organic matter content, fulvic acid, exchangeable acidity, exchangeable aluminium, neutral phosphatase activity, total amount of inorganic phosphorus, the amount of actinomycetes, soil moisture, and total porosity in rhizosphere soil and non - rhizosphere soil apparently increased ; from near matu re stand to mature stand, soil activity acidity, organic matter content, humus component content, available phosphorus, total amount of amino acid, available k, soil enzyme activity, soil moisture, and total porosity in rhizosphere soil and non - rhizosphere soil decreased, but total phosphorus, soil acidity ( in particular, exchangeable aluminium ), and bulk density increased

    結果表明： （ 1 ）從落葉松幼齡林到中齡林，隨著林冠的郁閉和林下植被蓋度的急劇下降，林地土壤酸度、土壤酶活性、無機磷總量、速效鉀、土壤水分含量、總孔隙度呈明顯下降趨勢，而根際和非根際土壤有機質含量、腐殖質各組分含量、三大類微生物數量、酸性磷酸酶活性和土壤容重隨著凋落物的增加呈明顯上升趨勢；從中齡林到近熟林，由於撫育間伐，林分密度及郁閉度下降，林下植被蓋度逐步得到恢復，根際與非根際土壤有機質含量、富里酸、交換性酸、交換性鋁、中性磷酸酶、無機磷總量、放線菌數量、土壤水分含量、總孔隙度呈明顯的上升趨勢；從近熟林到成熟林，隨著林齡的增大，根際與非根際土壤活性酸、有機質含量、腐殖質各組分含量、有效磷含量、氨基酸總量、速效鉀、土壤酶的活性、土壤水分含量和總孔隙度呈下降趨勢，而根際與非根際土壤全磷含量、土壤酸度（特別是交換性鋁）和容重呈增加趨勢。
  5. Comparing with full light treatment ( control ), tr, gs, wue and light saturation point were significantly decreased, ci was increased by shading. so far as curve of light response, seedlings of 2 tree species represented higher photosynthetic capability under shading treatments in the ranges of low light

    和對照的全光照處理相比，遮蔭處理顯著地降低了多脈青岡和金葉含笑的蒸騰速率、氣孔導度、水分利用率和光飽和點，細胞間隙co _ 2濃度在遮蔭條件下顯著上升。
  6. In this paper, high heat penetration into a moving particulate bed is described mathematically with a comprehensive heat and mass transfer model. the distribution of gas velocity and pressure, the temperature field of gas and solid in the moving particulate bed are examined for different conditions. the results show that thermal penetration into the moving packed - bed particles by fluid flow in porous media is high only in the position near the gas entrance. the thermal penetration thickness tends to increase with the fluid flow velocity and decrease with the particle moving velocity. in the region of thermal penetration, the porosity of solid bed has significant effect on gas field and pressure loss. it is feasible to reduce the gas pressure loss by a larger width / height packed bed in design and operation. the correspondence between thermal infection depth and particle bed height would be helpful to keep high oapacity of reactor and reduce the cost of operation

    針對移動顆粒床中物料層內的高溫氣體滲流傳熱現象，考慮滲流與傳熱的相互作用，採用局部非熱平衡假設建立了多孔介質滲流傳熱物理數學模型並進行了數值計算.研究了不同情況下床內填充多孔介質中的流速、氣固溫度和床層壓力損失.計算結果表明，高溫熱氣對移動床顆粒料層的熱滲透主要發生在滲流入口端區域，增大入口滲流速度以及減小床層物料下移速度將導致物料溫度沿床高慢速下降，熱滲透深度擴大，熱滲透作用區域內的物料溫度水平提高.在熱滲透作用區域，孔隙率對流場和壓力損失有很大的影響.研究結果對于移動顆粒床反應器的設計與運行具有一定的參考作用
  7. The value of pore water pressure dissipation can be divided into two parts. one part is produced by vacuum degree and the other part by groundwater table lowering

    加固區內地基中的孔隙水壓力的最大消散值可分為兩個組成部分：一為真空度的直接傳遞導致的孔壓下降值；二為抽真空引起水位線下降進而引起的孔壓消散值。
  8. The reason for the failure of loosely residual soil slopes triggered by rainfall is that the contractive failure caused by the penetration of rainfall, giving rise to a high excess pore pressure which reduces shear strength of the soil. the soil is prone to flow slide after failure under the action of gravity due to its high moistu re content

    蔣家溝地區坡殘積土斜坡在暴雨條件下的破壞是由於降雨入滲導致土體發生剪縮破壞，破壞後土體的孔隙水壓力升高形成超孔隙水壓力、土體強度降低、破壞迅速擴展所致，因而大多數斜坡呈流滑型破壞並具有突然性破壞特點。
  9. The pore water pressure dissipation in the silt is produced mainly by lowering of groundwater table and pore water pressure dissipation in the pvds ( or sand drains ) is produced mainly by vacuum degree

    淤泥地基中孔隙水壓力消散主要是由於地下水位線的下降引起的；而砂井或塑排中的孔壓消散大部分由真空度直接引起。
  10. In this paper a numerical method for equations of transport and biodegradation in the fractured media is discussed. because the equations consist of terms related to advection, diffusion, biochemical as well as the term of exchange betwen the fracture and the porous media, it is very difficult to find their solution. in order to find more efficient method for solving these equations, several numerical methods for the equations without biochemical terms are discussed first. the numerical results show that the cubic spline method can be used to solve advection flow dominated problem which often occurred in the fractured media. then, the equation with both advection - diffusion term and biochemical term are discussed. the splitting - operator is used to decouple the advection and diffusion terms with biochemical term in the equations. the way to determine the smaller time step for solving fast biochemical terms is introduced through comparing the order of characteristic time of biochemical term with that advection ( diffusion ) term. numerical simulation results show that good agreement between analytical solution and experiment result is attained

    本文討論了含裂隙介質地下水污染物輸運與生物降解非線性方程組數值求解方法.方程含有對流項、擴散項、生長、死亡、吸附、解吸、趨化和孔隙與裂隙介質界面間的交換項的非線性偶合，使演算法十分困難.本文討論了無生化過程時的幾種求解方法，數值結果表明：用三次迎風插值法對常見的對流項占優勢，且場變量有較大梯度的問題較適用.在討論有生化反應過程時，利用對流項與生化反應項的特徵時間量級估算，給出了求生化過程作用子步的時間步長估算辦法.用上述方法所得到的模擬結果與解析解、無化學反應和有化學反應的實測值對比，吻合很好
  11. After yearly burning, soil moisture content, porosity, separate coefficient, capillary and field moisture capacity increased, however, soil saturated water retaining capacity and unit weight decreased

    連年火燒使土壤含水率、孔隙度、分散系數、毛管持水量和田間持水量升高，而使土壤飽和持水量、容重下降。
  12. The content of chlorophyll ( chlorophyll a and chlorophyll b ), photosynthesis rate, transpiration rate, intercellular co2 concentrations, and stomatal conductance was all reduced under water stress at different development stages

    不同生育時期水分脅迫下使葉綠素含量、光合速率、蒸騰速率、細胞間隙co2濃度、氣孔導度都有不同程度降低。
  13. The study shows that rock stress sensitivity has the following characteristics : rock property has little sensitivity to stress, of which porosity has the least, permeability less, and compression coefficient most ; the rock property decreases with formation pressure decrease ; in the same formation pressure drop, decrease amplitude of the rock property is not a continuous function of permeability but related to distribution scope of permeability

    研究得出，巖石的應力敏感性特徵主要有：巖石物性對應力的敏感性總體上不大，其中以孔隙度最小，滲透率次之，壓縮系數最大；巖石物性隨地層壓力的下降而下降；在同一地層壓降下，巖石物性下降幅度不是滲透率的連續函數，而是與滲透率分佈范圍有關，高滲透率范圍，巖石物性下降幅度小，低滲透率范圍，巖石物性下降幅度大。
  14. The results of the effect of nacl concentrations on photosynmetic rate ( pn ), stomatal conductance ( gs ) and substomatal co2 concentration ( ci ) showed that the pn of the transgenic lin

    對轉基因植株及野生型植株光合速率（ pn ） 、氣孔導度（ gs ） 、細胞間隙co 。的濃度（ ci ）分析表明，鹽脅迫下均下降，但在200 。
  15. In view of geological and hydro - geological situations of the south anchor runyang yangtze river highway bridge, the paper bring forward mathematical model and calculation method of double deck structure groundwater, which can be used to lively calculate every layer ' s water table, so that we can realize every layer ' s settlement calculation and control ; establish the inter relationship between non - linear physical - mechanics parameter and hydro - geological parameter, objectively describe the non - linear change process of the porosity, hydraulic conductivity, specific storativity in the process of soil dewater and concretion

    針對潤揚長江公路大橋南錨場地地質、水文地質條件提出了雙層結構地下水運動的數學模型和計算方法，該方法可以實時計算出各分層的地下水位，實現了各分層沉降計算與控制研究；建立了土層非線性物理力學參數與水文地質參數之間的內在聯系，客觀地描述土層降水? ?固結過程中孔隙度、滲透系數和貯水率等參數非線性變化過程。
  16. Zny, ni ( 1 - y ) fe2o4 and cobalt substituted ni - zn soft ferrite powders of zn0. 4ni ( 0. 6 - a ) coa fe2o4 are synthesized by shs. the shs powders and cycle samples are annealing in 1100 for 2h. their magnetic, and micro structural properties are studied using xrd, vsm and sem techniques. the studies reveal that the value of hc mr and ms of the powder of zn yni ( 1 - y ) fe2o4 are maximal when the value of y is 0. 4

    研究發現：隨著zno含量（ y值）的增加，粉末產物的矯頑力（ hc ） 、飽和磁矩（ ms ）以及剩餘磁矩（ mr ）先增大（在y = 0 . 4時取得最大值）然後再下降；磁環表面顆粒逐漸長大，孔隙率減少，密度增加；磁環的bs與br先增大再減小，在y = 0 . 4時達到最大；磁環的矯頑力hc是遞減的。
  17. Under the condition of uniformity degradation the formation compression will have a whole fall on account of the reduce of overburden, the expanding of fluid hi the pore and rocks and the decrease of density

    在均勻剝蝕情況下，上覆巖層厚度減小，巖石和孔隙流體膨脹，密度減小，地層壓力會整體降低。
  18. 4 : photosynthetic characters : the pn, gs and transpiration rate both in control and in the transgenic seedling increased during the growth, and the ci decreased, but the change scope in transgenic seedling is more great than in control

    對照的凈光合速率、蒸騰速率、氣孔導度後期比前期略有上升，但均低於轉基因苗，山東師范大學碩士研究生學位論文其細胞間隙coz濃度下降。
  19. 5 ) the velocity of the compressive and shear wave for the samples saturated completely by brine increases with the increasing of confining pressure ( with the constant pore pressure ), but poisson ' s ratio decreases. 6 ) some interior factors, such as the composition of rock, porosity, density and so on

    5 ）在完全飽和水、溫度和孔隙壓力不變的條件下，無論是縱波、橫波1還是橫波2 ，珠江口盆地第三系砂巖、粉砂巖、碳酸鹽巖及其過渡性巖石類型的速度均隨圍壓的增大而增加；大多數情況下，泊松比隨圍壓的增加而降低。
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