持水力 的英文怎麼說

中文拼音 [chíshuǐlì]
持水力 英文
retention ability
  • 持 : 動詞1 （拿著; 握著） hold; grasp 2 （持有; 保持） keep; hold 3 （支持; 保持） support; maintain 4...
  • 水 : 名詞1 （由兩個氫原子和一個氧原子結合而成的液體） water 2 （河流） river 3 （指江、河、湖、海、洋...
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 水力 : waterpower; hydraulic power水力剝離 [采礦工程] hydraulic stripping; strip with water; 水力采礦 hy...
  1. The protective designs analyze the self - purify approach of nature water body, strengthen the purify function of water body type, improve the water body construction and biome by principle of resuming the water quality, and maintain water quality by the balance capacity of the system

    保護性設計以水質恢復原理為指導，分析自然水體的自凈途徑，強化了水體形式的凈化功能，完善水體結構與生物群落，依賴系統自身的平衡能力維持水體質量。
  2. 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。
  3. Any more water added to soil at field capacity would drain away by gravity

    超過田間持水量的所有添加的水分的都會由於重力作用而流失。
  4. Field capacity the point at which the soil contains all the water it can hold by capillary and chemical attraction

    田間持水量：土壤通過毛細作用和化學吸力可維持的全部水量。
  5. The threshold value of soil water contents for photosynthesis and stomatal resistance is about 14 ( 0g ), i. e., 60 65 of field capacity

    棉花的光合速率和氣孔阻力隨土壤含水量變化的閾值約在14土壤含水量水平，該閾值相當於田間持水量的60 65 。
  6. At the same time, the quality of different - state water was studied. the results show : the soil bulk density of the fir wildwood heightens with the increase of soil depth, specifically 0. 74 > 0. 94 andl. 34g / cm3, the saturated, canaliculus and field moisture contents decrease gradually in layer a, b and c, accordingly the soil total foveola decreases gradually, and the moisture - hold capacity of the soil lessens gradually with the increase of the soil depth ; there is small difference of the soil bulk density between layer a and b in the outer space, which are respectively 0. 92 and 0. 99g / cm3, and the other laws are the same as the in ner in the main ; reverse success often occurs in the low position of the thoroughly - fell trace and plateau marsh is formed

    結果表明：冷杉原始森林土壤容重隨土層深度的增加而增大，分別為0 . 74 、 0 . 94 、 1 . 34g cm ~ 3 ，飽和持水量、毛管持水量、田間持水量a層、 b層、 c層逐漸減小，十壤總孔隙度也逐漸減小，土壤的持水能力隨深度的增加逐漸減弱；林外空地a層、 b層十壤容重相差不人，分別為0 . 92和0 . 99g cm ~ 3 ，其它規律與林內人體相同：皆伐跡地的低洼地段容易發生逆行演替，形成高原沼澤地。
  7. The investigation of a lot of parameters about treated sandstone, brick materials and earthen materials with fluorited polymers has been carried out, such as the formation of polymer, the penetration depth, porosity, capillary absorption and penetration coefficient, water uptake, compressive strength, drilling resistance, absorption isotherms of water vapor, water vapor diffusion, color changes as well as resistance to desegregation of water, frizzing - throwing cycles, worming - cooling cycles, and so on. in addition, the influence of salt crystallization, acid and base, and uv aging have also been assessed in order to better understand the protection effects and utilization possibility of two fluorinated polymers, mainly according to astm standard and the combination of international methods together with general technological

    分別以國家級文物保護單位的土質、砂巖和磚材文物樣品為對象，依據astm標準及國際通用文物保護研究方法與評估準則相結合，通過膠化物形成周期、滲透深度、孔隙度、毛細吸水和滲透系數、持水量、抗壓強度、抗鉆強度、吸附水蒸氣的能力、透氣性、外觀顏色等系列參數的測定，及凍融、冷熱循環、酸堿腐蝕后抗壓強度的衰減、可溶鹽對保護效果的影響、酸堿及光照對表面保護效果的影響，對兩種含氟聚合物及其與有機硅的共混物在文物加固保護和表面防護中的可行性和保護效果給予了系統研究。
  8. The results are summarized below : 1 ) study on soil science indicates that soil granular structure is the focus adjuster for soil fertility and it affects the space, water - grasp, aeration and anti - erosion of soil. and the percentage of aggregate is one of the key index that decides the speed and extent of soil erosion, hardening and degeneration because the soil degeneration will first lead to the disappearance of crumb - structure. so it is very important that the physical course and character of soil in different land use pattern are realized

    現將主要結果摘要如下： l 、士壤學研究表明，團粒結構是土壤肥力的中心調節器，影響著土壤的空隙性、持水性、通透性和抗蝕性；任何土壤的退化首先將表現出團粒結構的消失；團聚體百分比是決定土壤侵蝕、板結等物理過程速度和幅度的關鍵指標之一，了解不同土地利用和土壤管理方式的物理過程和性質相當重要。
  9. Continuous service hydraulic power plant

    持續運轉水力發電廠
  10. The capacity of air to hold water vapor depends on its temperature and pressure.

    空氣保持水蒸氣的能力取決于溫度和壓力。
  11. Solve the problem by deploying additional water wagons to provide extra water supplies to areas where water pressure was weak. the waterworks office asked for calm and advised the public to be patient, however they could not eradicate the problem of the severe water shortage

    雖然水務局呼籲市民保持冷靜，並在水力不足的地區，派出水車加時供水，彌補部份區域食水不足的情況，但並不能解決缺水的根本問題。
  12. Major top soil improvement and hydroseed projects are still continuing along both the eastern and western side of airport road

    在機場路東西兩旁，大規模的表土改善工程及水力播種計劃仍持續進行。
  13. In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively

    本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。
  14. Moreover, hedgerow ecosystems were effective in controlling water and soil loss in june and august. under simulated rainfall, hemercoallis citrina baroni and p. rotation flligg hedgerow ecosystems had a significant effect on reducing water and soil loss in their later stages of plant growth, and there was a significant positive correlation between the effect on reducing water and soil loss and the rain intensities. moreover, hedgerow ecosystems decreased more soil loss than runoff, and the initial time of runoff incidences could well represent the water and soil conservation effects of hedgerow ecosystems

    Rotatumflligg ）植物籬笆生態系統年徑流量、年侵蝕量分別減少10 . 14 11 . 56倍和135 . 34 165 . 84倍；植物籬笆生態系統和大豆單作處理的徑流量、侵蝕量、可產生侵蝕的降雨量之間呈極顯著正相關，建立了相應的降雨產流、降雨產沙、徑流侵蝕模型，通過侵蝕雨量可以了解水土流失的發生特徵； 6月和8月份（多短時暴雨）水土保持能力較明顯。
  15. In chapter 4, based on the analysis of denotation and functions of index system and the elaboration of connotation, goals, basic principles and its factors of asd, we inquire 25 scholars in the fields of asd and construct the index system of easd including population, economic, social, resources, environmental system that add up to 32 indicators considering from the statistic data in hand. then we calculate the weight of each indicator with the analytic hierarchy process ( ahp ) according to the advices given by the scholars. next, a comprehensive evaluation model is built for evaluating the level of asd, the ability of the resources and environmental systems to the population, economic, social development systems, the level of coordination development situation of population, economic, society, resources, environment with the methods of econometrics regress models and fuzzy mathematics

    論文第四章，在把握一般指標體系內涵、功能的前提下，結合對農業可持續發展的涵義、目標與影響因素分析的基礎上，通過對25位國內農業可持續發展研究學者的咨詢，構建包含人口、經濟、社會、資源與環境五大系統共32個指標的浙江大學碩上學位論文衣業友展可持續性的評估指標體系及其應用研究農業可持續發展評估指標體系，採用層次分析法（ ahp ）確定各指標權重，進而從農業可持續發展水平、農業中資源與環境系統對人口、經濟、社會系統的支持能力及各大系統之間的協調發展狀況三個方面運用統計分析方法（計量經濟學和模糊數學）建立綜合評估模型。
  16. Furthermore, on the basis of consultancies, inquiries and evaluations from multiple sources, the model for predicting soil and water loss in dandong - zhuanghe highway construction is developed. moreover, considering the characteristics of the highway, the covering area of the project is divided into three parts such as main body area, soil - fetching area and soil - spoiling area. for these three preventive areas, the perfect precaution measures for preventing and curing the soil and water loss during the road construction in which a number of vegetal cover measures are taken

    論文中詳細調查並介紹了項目情況及沿線自然、社會經濟狀況；收集研究了公路建設項目水土流失預測的基本內容和方法，在多方查詢、請教專家及分析研究的基礎上，提出了丹莊高速公路水土流失預測模型，針對項目不同區域進行了水土流失預測和分析，為水土保持措施的設計提供了定量依據；論文根據高速公路項目的特點，將丹東至莊河高速公路項目區分成了主體工程、取土場、棄土場三個水土流失防治區，並在初步設計文件的基礎上，針對三個水土流失防治區進行了較為完善的水土保持防治措施設計；論文在丹東至莊河高速公路水土保持方案設計中大量採用了植被防護措施，為了更有力地指導植被措施的施工，論文中還就植被保持水土的有效性進行了研究探討。
  17. Take excellent care of your physical health ? ? how to develop and maintain high levels of energy and fitne

    倍加重視有一個健康的身體? ?努力提高健康水平，保持精力旺盛。
  18. Take excellent care of your physical health ? ? how to develop and maintain high levels of energy and fitness

    倍加重視有一個健康的身體? ?努力提高健康水平，保持精力旺盛。
  19. It is requisite to employ the dynamic positioning system with fine performance in the work of maritime development, inshore engineering support, underwater work support, and so on, if the ship needs keeping fixed position or sailing along a desired track in the work

    海洋開發、近海工程支持、水下作業支持等項工作如果要求船舶保持作業地點固定不變或按照預定的軌跡航行，就需要有性能良好的動力定位系統。
  20. Clay has large soil moisture because of it ' s strong capacity

    而粘土有較強持水力，上層土壤濕度大。
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