natural field method 中文意思是什麼

natural field method 解釋
自然場法
  • natural : adj 1 自然界的；關于自然界的。2 天然的；未開墾的；野生的。3 固有的 生來的 天賦的（opp acquired）...
  • field : n 菲爾德〈姓氏〉。n 1 原野，曠野；（海、空、冰雪等的）茫茫一片。2 田地，牧場；割草場；〈pl 〉〈集...
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. In this paper, the analytical method of linear stability has been applied to establish the marginal stability criterion of natural convection in porous medium, after considering the action of gravity, centrifugal and coriolis forces together in centrifugal force field

    理論研究的結果表明，當離心力與溫度梯度同方向時，只要滿足ra > 7 . 81 2或ra0 > 4 2 ，多孔介質中即可發生離心力、重力與哥氏力共同驅動的自然對流。
  2. Method for field test of natural durability of wood

    木材天然耐久性野外試驗方法
  3. Based on features of natural electric potential in oxidation and reduction zones, it is held that the natural electric field method may determine the front line of the interlayer oxidation zone, and can hence infer the general position of the interlayer oxidation zone sandstone - type uranium deposit

    根據氧化帶與還原帶的自然電位變化特徵，利用自然電場法可以確定盆地層間氧化帶前鋒線，由此推測層間氧化帶砂巖型鈾礦大體空間位置。
  4. A primary investigation on the application of natural science method to the field of social science

    自然科學方法在社會科學領域中應用問題的爭論探源
  5. Greatest virtue of the method is always combined with practicality ( wind record is real, site of record is real, the site of bridge is real ), while the method for calculation of buffeting response is a ripe one ? inite method. the method for simulating natural wind field is convenience and workable

    該法的最大特點是始終與實際相結合（風速記錄是實際的、記錄的地點是實際的、選擇的橋梁是實際的） ，而分析抖振響應的計算方法是成熟的?有限元法，模擬風場的方法方便、可行。
  6. According to the properties of both the structural style and the vibration mode of long cable - stayed bridge, and considering the correlation characteristics of natural wind, a practical method is introduced to simplify stochastic wind velocity field of long cable - stayed bridges for taking pylon wind field effect into account

    為考慮斜拉橋橋塔風效應，根據大跨度斜拉橋結構形式特點，結合脈動風的相關特性，提出了一種簡化的大跨度斜拉橋三維脈動風場模擬方法。
  7. Introducing several osl fabrication methods, mainly electric field poling method is investigated, and discussing the limit relation among poling electric field e, poling current i and natural poling intensity ps, and analyze the various factor affecting the osls quality. 4. the experiment of aperiodical litaos multi - wavelength shg is demonstrated

    3 、介紹了幾種介質制備的方法，著重對高壓電場極化法進行了理論研究，討論了脈沖電壓，電流及自然極化強度p _ s之間的制約關系，分析了影響成疇質量的幾個物理因素。
  8. Through field investigations on yifukou village and gaojiatai village in north slate area, the paper probes into the residential construction site layout, construction materials and the spatial organization on the environment and use of natural resources to deal with the mode and method of villages in this area it sums up the characteristics of residential construction, which ore of comprehensive utilization of natural resources and initiative confrontation with the environment, with a view on the level of the utilization of resources and environmental confrontation to explore the point

    摘要通過實地考察豫北石板巖地區高家臺村和益伏口村，探討了該地區民居建築的村落選址，平面布局，空間組織及村料構造上應對環境和利用自然資源的模式和方法，總結出自然資源綜合利用和自然環境主動應對的民居建造特點，以期從資源利用、環境應對的層面尋求設計的切入點。
  9. Application of natural alternate electric field method in measurement of gob water accumulation in wangcun mine

    天然交變電場法在王村礦測試采空積水的應用
  10. They are agricultural productive materials price growth rate, sown area of grain crops growth rate, grain yield per area growth rate -, natural disaster covered grain areas growth rate, net grain import change rate, grain reserve change rate, population growth rate, per income growth rate, city and town population growth rate, food industry production value growth rate, year - end pig number growth rate, medical & pharmaceutical and textile industry production value growth rate, grain marketization degree, inflation rate using the previous year as base year ( preceding year = 100 ), public grain purchases price growth rate, investment in agricultural science and technology growth rate, investment in agricultural infrastructure growth rate, growth rate of graduates number from agriculture, forestry, science & technology universities and colleges and specialized secondary schools, government expenditure for agriculture and agricultural credit growth rate, international grain price growth rate, rmb exchange rate growth rate, last grain price growth rate, economic crop price growth rate, meanwhile, a new method is attempted to be used in this paper and the grain price early - warning problem is transformed into machine learning problem by introducing statistic learning theory and svm method which are gaining popularity in machine learning field at present in the world

    在此基礎上，篩選出23個警兆指標：農用生產資料價格增長率、糧食播種面積增長率、糧食單產增長率、糧食受災面積增長率、糧食凈進口量變化率、糧食儲備變動率、人口增長率、人均收入增長率、城鎮人口增長率、食品工業產值增長率、豬年末頭數增長率、醫藥紡織工業產值增長率、糧食市場化程度、以上年為基年的通貨膨脹率、國家糧食定購價格增長率、農業科技投入增長率、農業基礎設施投入增長率、農、林、科技高校大、中專畢業生人數增長率、財政支農資金比重及農業信貸增長率、國際糧食市場價格增長率、人民幣匯率增長率、上期糧食價格增長率、經濟作物價格增長率。同時論文在預警方法上作了新的嘗試，把糧食價格預警問題轉換成一個機器學習問題，引進當前國際上機器學習領域中比較熱門的統計學習理論和支持向量機方法，用順序回歸演算法對歷史數據進行學習建立了糧食價格預警模型。
  11. On the basis of on - the - spot investigation and information, this article puts forward the stratum separation scheme and field criterion for projects in gansu loess areas ; presents the geological structure model of the natural slope in this area for the first time ; counts and analyses the parameter of the loess ; analyses the stability of loess cut with the method of ultimate balance and finite element ; recommends different transect forms for the cut subgrade in gansu ' s loess areas ; evaluates these forms with grey system theory concerning stability, economy and anti - scour capability ; finally, puts forward the design method and procedures of reasonable heavy cuts transect

    本文通過大量的現場調查和資料收集，提出了甘肅省黃土工程地層劃分方案和野外判定標準；首次提出了甘肅省黃土自然邊坡的不同地質結構模型；統計和分析了甘肅省黃土的土性參數；運用極限平衡法和有限元法對黃土路塹高邊坡穩定性進行了分析；推薦了甘肅省不同黃土地區路塹高邊坡的斷面形式，並結合穩定性、經濟性和抗沖刷性能，應用灰色系統理論對其進行評價；最後，提出了黃土路塹高邊坡合理斷面設計方法和設計步驟。
  12. Allocate the principle of the basis of the cubic metre of earth and stone, combine the characteristics of limestone geology of mountain area and ecological environment, we set up the mathematical model of the linear programming, which is suitable for limestone mountain area large system cubic metre of earth and stone of expressway, meanwhile we put forward systematic thinking of treatment and method through the remaining cubic metre of earth and stone after allocating, at the same time, we give the protective measure on abandon soil field and fetch earth field about environmental ; making the discussion on medical treatment of natural river system and underground river system of the slope recover

    根據土石方調配原則，結合石灰巖山區地質和生態環境的特點，建立了適合於石灰巖山區高速公路的大系統土石方調配線性規劃數學模型，同時對通過調配后剩餘的土石方提出了系統的處理思路和方法，並對棄土場提出了系統的環境保護措施;對各種排水設施的設置與自然水系的調治恢復相結合做了初步探討。第三，路塹邊坡環境恢復。邊坡景觀是公路景觀的重要組成部分，是高速公路環境保護研究的主要內容。
  13. Natural electric - field method instrument

    自然電場法儀器
  14. The application of natural electric field method to the study of groundwater flow field

    應用自然電場法研究地下水流場
  15. " digital land " project posed by national land resources ministry in land and resource survey, is another information project after " digital earth ". this indicates resource information management has been one of the important subjects in present science and technology fields. the mineral resources are an important part of national land resources. they are one of the most basic and important production data which the human beings rely on for existence and develope by. and also are the matter foundation of national economy and society development. thefore, it ' s very significant to promote rationally developing and utilizing the mineral resources by changing the traditional management method, applying the modern information technology to establish the mineral resources management system. geographic information system is just a comprehensive information technology capable to store, manage, analyze and display spatial data, and its powerful spatial query and spatial analysis function have been used in both natural and social sciences, especially in the field of the national resources management. on gis platform, the article studies the designment and development of the mineral resources management system in yulin, and probes into an information method of the mineral resources management in theory and practice

    地理信息系統正是一門對空間數據的存儲、管理、分析、顯示的綜合性技術，其強大的空間查詢與分析功能已被廣泛應用於自然科學與社會科學，尤其是在國土資源管理領域中。為此本文以gis軟體為平臺，開展了榆林礦產資源信息管理系統的設計與開發工作，在理論和實踐上探討一種礦產資源管理的信息化方法。文中在分析了系統功能需求的基礎上，建立了圖形數據與屬性數據兩類相結合的數據庫，實現了圖形數據庫中內部屬性表與屬性數據庫中外掛屬性表的連接，將圖形數據與屬性數據統一存儲、處理和分析，可對礦區已有資料實施信息化管理。
  16. The application of the natural electric field method to the prospecting for interlayer oxidation zone sandstone - type uranium deposits

    自然電場法在尋找層間氧化帶型砂巖鈾礦中的應用
  17. This paper deals with the basic theory of the natural electric field method and its application to the prospecting for interlayer oxidation zone sandstone - type uranium deposits

    摘要介紹了自然電場形成的原理及在尋找層間氧化帶砂巖型鈾礦中的應用。
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