field layer 中文意思是什麼

field layer 解釋
草本層
  • 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...
  • layer : n 1 放置者，鋪設者，計劃者。2 【賽馬】（一般）賭客。3 產卵的雞。4 【軍事】瞄準手。5 層；階層；地...
  1. They are jinfo mountain in nanchuan county ( natural protection section ), wuling mountain in qianjiang county ( national emphases forest demonstration county which forest cover rate is beyond 50 % ) and zhongliang mountain in beibei county ( artificial destruction is very grave ). some main land use patterns i. e. woodland, garden, infield, abandon infield, shrub and grassplot are selected in those three sample sites. four aspects on soil fertility index of karst environment under different land use patterns in these three sample sites, are revealed in this paper, by using the field test, indoor measure and analysis, outdoor experiment and field investigation, and the knowledge and technique of soil, ecology, physics and chemistry etc. they are physical characteristic ( effective soil thickness, organic layer thickness, soil texture, water - stable aggregate and soil water etc. ), chemical fertility ( organism, omni - n, omni - p, omni - k, alkali - nitrogen, available p, available k and rapid available k etc. ), soil animalcule ( bacteria, fungi, actinomyces and their grosses ) and soil - seed - pool ( plant community diversity index ) in karst ecosystem

    本研究以重慶市的南川金佛山（自然保護區） 、黔江武陵山（國家重點退耕還林示範縣，森林覆蓋率50以上）和北碚中梁山（遭人為破壞嚴重）典型巖溶區為對象，選擇了幾種重要的利用方式，包括林地、果園、耕地、棄耕地和灌草坡，採用野外巖溶生態調查和室內試驗測量分析相結合的方法，以不同土地利用方式巖溶土壤肥力為重點，對不同土地利用方式土壤肥力特徵進行量化分析，找出巖溶土壤肥力差異的主要方面及其根本原因，論文主要從土壤剖面物理退化指標（有效土層厚度、有機質層厚度、質地、團聚體、水分含量等） ，化學肥力退化指標（有機質、全n 、全p 、全k 、堿解n 、速效p和速效k等） ，樣地土壤微生物指標（細菌、真菌、放線菌數量及總量）以及樣地土壤種子庫植物群落多樣性等4個方面對重慶典型巖溶區的土壤肥力特徵進行了較為詳細的分析研究，為巖溶地區士壤資源的合理利用及結構的調控管理提供依據。
  2. There is a north - north - east negative anomaly belt of aerial magnetism in the middle - east part of the basin, which could be displayed by the aerial magnetism of commutative field, upwardly continuation, lvt in earthquakes, the experimentation of granite liquation ( demagnetization ), the distribution of neozoic era volcanic rock, earthquake, hot spring and ground feature. the anomaly shows the blocking in east - west direction, and it is also associated with intense activity of deep heat interaction and the development of the crust - mantle mixed layer in the north qiangtang

    從區域航磁、向上延拓、地震低速層、花崗巖熔融（退磁）實驗、新生代火山巖的分佈、地震、溫泉、地貌等發現，盆地中東部存在一北北東向航磁負異常帶，既顯示出東西分塊，也與北羌塘深部熱力作用強烈活動、發育「殼幔混合層」有聯系。
  3. By introduction of two lif layers, the adjustment of the position of thin layer alq3 in the microcavity is achieved and the effect of the coupling strength between the emissive dipole and vacuum electric - field on the emission intensity in ( / 2 - length microcavity is studied for the first time

    在帶有dbr結構的高q值微腔中，觀察熒光壽命變短輻射速率提高的現象。通過使用填充層，來實現對薄層alq在腔中位置的調節，研究了輻射偶極子同光電磁場的耦合強度對輻射強度的影響。
  4. A one - dimensional oceanic mixed layer model with the m - y level - 2. 5 turbulence closure schemes is employed. the rate of energy loss by breaking waves is estimated by parameterization and incorporated into the model as a source of turbulence kinetic energy ( tke ) by modifying the existing surface boundary condition of tke equation. the velocity field and turbulence energy budget are calculated under different forcing conditions ( the results given below are for a wind speed of 20 m / s. )

    採用一維2 . 5階湍封閉混合層模式，根據參數化方法對波浪破碎導致的能量耗散率進行了估計，通過改變湍動能方程的上邊界條件引入波浪破碎對湍動能生成的影響，計算了不同風應力強迫下的混合層流場結構和湍能量收支（下述給出的結果是取風速為20m s得到的） 。
  5. By simulating river plume evolution under the combined action of tide and estival wind field averaged over many years, we have found that the modeled salinity distribution is consistent with the observed one rather well, which means the river plume development plays an important role in adjusting the salinity distribution in the surface layer of bohai sea

    通過檢驗河流羽流在潮汐和渤海夏季多年平均風場共同作用下的發展特徵，發現計算得到的表層海水鹽度分佈與實測值相當吻合，因此可以認為河流羽流發展對于渤海夏季鹽度分佈起著重要作用。
  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. Wind field ; temperature field ; urban heat island ; urban boundary layer ; beijing area

    風場溫度場城市熱島城市邊界層北京區域
  8. Interior sound field in double - layer elastic - nonelastic enclosed cavities

    非彈性封閉腔體的內部聲場研究
  9. On the basis of the discussion of the ecological rehabilitation on subsidence land of coal extraction, the land structures of nourishment, plane and perpendicularity on subsidence area of coal extraction are differently designed. on nutritive structure green crops are mainly common crops, green vegetables, green forage crops and acquatic creatures. on plane structure the center of the subsidence land of coal extraction can be used as fish culture in net cage, the periphery can be established as fish pool and economic crops in water, and the outmost layer can be used as high - yield field, vegetable shed, domestic animal breeding area and fruit - bearing forest. on vertical structure the deepwater area can be established as fish pool and economic crops in water, and the uppermost layer can be developed as acquatic and semi - acquatic crops or dry farming crops

    在討論採煤塌陷地生態復墾的基礎上，對新泰市採煤塌陷區生態復墾用地的營養結構、平面結構和垂直結構進行了優化設計.在營養結構上，綠色作物主要是農作物、蔬菜、飼料及水生生物.在平面結構上，在塌陷的中心地帶實施網箱養魚，外圍區建立精養漁塘和水生經濟作物，最外層生態復墾為高產農田、蔬菜大棚、畜禽養殖區和林果地.在垂直結構上，在積水區建立精養漁塘和水生經濟作物，最上層則發展水生、半水生及旱作綠色經濟作物
  10. One is to improve the photoconductivity by annealing the mpc film under magnetic field ; the other is to form composite multi - layer film of zno / pbpc and sno / pbpc, to change the spectral response range of mpc films

    一是通過磁場熱處理提高酞菁薄膜的光電導性能；二是通過將p型酞菁與n型材料異質復合，改變光譜響應范圍。
  11. On the nitrate - n accumulated characteristics in deep soil layer of winter wheat field in taihang piedmont

    太行山山前平原冬小麥田深層土體硝態氮累積特徵研究
  12. In computation the effect of thermal insulation, elastic modulus, creep degree and autogenous volume change along with age, the progress of pouring by layer, work suspension in summer, the change of air temperature, heat preservation, water cooling, and water storage, by stages on temperature field are considered

    計算中考慮了混凝土的絕熱溫升、彈性模量、徐變度和自生體積變形隨齡期的變化以及分層澆築、夏季停工、外界氣溫變化、表面保溫、通水冷卻及分期蓄水等因素對壩體溫度應力場的影響。
  13. The method can simulate light scattering behavior on the condition of single layer and multiple layers, and preferably deals with reflection and transmission between layers, with a good agreement with literature results. 3. laser beam scattering by an object in near field is studied

    該演算法可用於模擬計算單層和多層塗層，平行平面結構和粗糙表面情況下的光散射行為，較好地處理多層塗層結構中各層間的反射和透射，模擬結果與文獻結果吻合的很好。
  14. In chapter four, according to the analysis on the boundary theory and velocity field of main fluid zone of two - phase fluid pumps, the parameter equations of vane ' s modular curve of centrifugal pump are given, which contact the boundary " layer and eular theory of two - phase fluid pump by the fixing angel of vane as variable and leading into the velocity coefficient a. the results show that, in designing process of vane ' s modular curve of centrifugal pump, the determination of the total shape and parameters relates the flow properties of two - phase fluid and output ability of pump, or the design of the modular curve of centrifugal pump is the kernel of hydraulic design

    第四章依據固液兩相流泵的邊界層理論及對主流區速度場的分析，給出了離心泵葉片型線的參數方程；它是以葉片安裝角為參變數，以引入的速度系數k _ v作為中間因子，將兩相流泵的邊界層理論和歐拉理論聯系起來? ?它說明了這樣一個事實，在離心泵葉片型線的設計過程中，它的整個形態或參數的確定都關繫到兩相流體的流動特性和泵的輸出能力，或者說，離心泵型線的設計是其水力設計的核心。
  15. An a ] ternat ion mode betwoen l nt ert ' ii ( ) tt iilyer and fie1 d object layer is designed on mode1 - - v iew separdt e techno1 ( ) g } ", in which re - - use of field object is highly improved

    利用模型-視圖分離技術設計了用戶界面表示層對象和領域層對象間的交互方式，極大提高了領域對象的可重用性。
  16. During the high - voltage device design, the thick epitaxial layer ldmos which is compatible with current technology was researched. this device used piecewise vld and multiple region structure f reduce field layer. the using of the f reduce field layer effectively reduce the surface electric field of the device, shorten the length of its drift region, enlarge the choice of range of the ion implant dose of the p layer, and effectively restrain the disadvantageously affection on the breakdown voltage of the interface charge qss

    在高壓器件研究中對與現有工藝相兼容厚外延ldmos進行研究，該結構採用分段變摻雜多區p ~ -降場層，有效降低器件的表面電場，縮短器件的漂移區長度，增大p ~ -降場層注入劑量的選擇范圍，並有效地抑制界面電荷qss對器件耐壓的不利影響。
  17. First, we use a simple three - layer - model to gain the expressions of the electric field of cladding mode and its dispersion equation, at the same time, we present the expressions of the electric field of the core mode and its dispersion equation

    因為要考慮包層模，所以首先用光纖的三層模型得到包層模的場分佈和色散方程，同時也給出單模光纖纖芯基模的場分佈和色散方程。
  18. Linear induction motor is an important kind of machines which have some merits such as simple structure, low cost, durability, convenience for maintenance etc. the subject of this thesis is to study a big circular ring linear induction motor, and the major works in this thesis are summarized as follows : ( 1 ) considering the effects of the finite length of primary core, one - dimension analytical solution for the air gap field is cited in this paper. based on it, the single layer winding magnetic field is studied. considering whole - pitched and short - pitched winding configuration with odd poles and half - fulled slots in both ends, the double - layer winding magnetic field is analyzed, respectively

    本文對大圓環直線感應電機進行了深入細致研究，內容包括： （ 1 ）本文採用有限長行波面電流作用於有限長鐵芯上的模型，引用了氣隙磁場一維解，研究了單層繞組磁場，奇數極半填槽雙層繞組在採用整距和短距時磁場的分析、比較，簡單介紹了二維解； （ 2 ）用有限元軟體ansoft對大圓環直線感應電機空載氣隙磁場進行了靜態分析，並分析了結果； （ 3 ）用軟體進行了額定電壓下的瞬態分析，得到了轉矩，位移，轉速隨時間變化曲線圖，利用單極性霍爾元件測定轉速並與軟體計算結果進行了比較，採用等效電路法計算了堵轉時的最大電磁力並做實驗進行了驗證，由實驗測得了三相電流波形，並與計算結果進行了比較，對其不對稱性進行了定性分析。
  19. In the third chapter, according the systemic general plan, the hardware circuit and the software program of node of field layer is designed

    並詳細闡述了can總線的特點和技術規范。第三章設計了現場監控層節點的硬體電路和相關軟體程序。
  20. A boosting - based algorithm and its application in flooded oil field layer identification

    的油田水淹層識別演算法
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