退化分佈 的英文怎麼說
中文拼音 [tuìhuàfēnbù]
退化分佈
英文
degenerate distribution-
So these karst series problems are lowness ability of making soils, distributing odds of surface water and groundwater, leakiness of fountain, alkalescence of circumstance, lowness of bio - diversity, rapidness converse succession of vegetation and fragility of soil character and entironment. and karst region produces many problems, e. g. rock desert, soil erosion and degeneration because of artificial influence and destruction
巖溶空間介質具有地上地下雙層結構，可溶巖造壤能力低，巖溶水空間分佈不均、地表地下水關系密切、水源易漏失，偏堿性環境、生物資源集聚程度低，植被逆向演替快、順向演替難，巖溶地質與生態環境十分脆弱，受到人為因素的影響和破壞，極易產生石漠化、土壤侵蝕與退化等一系列問題。On the basis of the government ' s policy of revitalizing the northeast old industrial base, preventing black earth from degeneration and strengthening protection of black soil in china, according to analysis of the distribution of black soil and the present research of black earth degeneration, the author summarized the main degradation type of black earth, revealed main reasons for its degradation, put forward some measures to prevent black earth from degrading and protecting black earth in addition, the author put forward the new and further direction to study the degradation of black earth on the basis of the existing study, and hope to play a role of inducing purpose in assuring sustainable utilization of black earth resource and furthering study
在國家振興東北老工業基地和防止黑土退化及加強黑土保護之際，通過對黑土分佈狀況和黑土退化研究現狀的分析，總結出黑土退化方式，揭示了其退化的主要原因，提出了防止黑土地退化和保護黑土地的措施，在現有研究的基礎上提出黑土退化研究的新方向，希望能為黑土資源可持續利用和進一步研究起到拋磚引玉的作用。In this thesis, four types of steel beam - rectangular cfst column connections, including normal welded flange plate ( wfp ) connection, bolted flange plate ( bfp ) connection, stiffened end plate ( sep ) connection and double split - tee plate ( dst ) connection, were designed based on the configuration of steel frame connection. total 8 models, 2 models of each kind of connections were tested under low - reversed cyclic loading at the end of cfst columns. the relationships between force and displacement at the end of columns, the relationships between the moment and rotation of the joints, degradations of strength and stiffness, ductility, failure mechanism and failure characteristics of these four connections under different axial - compression ratios were presented
本文借鑒鋼框架節點構造，設計了四種類型矩形鋼管混凝土柱與鋼梁連接節點，包括常規栓焊（ wfp ）節點、翼緣全螺栓連接（ bfp ）節點、雙t板連接（ dst ）節點以及加勁端板連接（ sep ）節點，進行了四類節點8個模型試件在柱端低周反復荷載作用下的抗震性能試驗研究，比較了不同軸壓比下節點的滯回性能、強度與剛度退化、延性、破壞機理與破壞特徵，主要結論有： 1 、節點的位移滯回曲線與轉角滯回曲線為塊型分佈，沒有或略有捏攏現象，耗能能力強； 2 、軸壓比對節點滯回曲線有顯著影響，全部節點都有顯著的剛度退化； 3 、位移與轉角骨架曲線在峰值荷載後有較長的水平或下降段，具有良好的延性性能； 4 、從整體抗震性能上看，翼緣全螺栓連接節點、雙t板連接與加勁端板連接節點都優于常規栓焊節點，可在實際工程中加以推廣。Distribution of limit cycles for a class of higher - degree degenerate planar polynomial systems of codimension two
一類余維2的高次退化平面多項式系統的極限環分佈Distribution of limit cycles for a class of higher - degree degenerate planar polynomial systems of codimension two is discussed
摘要討論了一類余維2的高次退化平面多項式系統的極限環分佈，證明了此系統至多存在3個極限環。The major strategies for developing non - timber product forest crops during constructing the shelterbelt of the changjiang river are to transform non - timber in the serious water and soil erosion areas, to plan the development scales of non - timber forest in the areas of returning farm to forest, to adjust non - wood products distribution, to establish high productive production bases of non - wood products and to strengthen the macroscopic guide of government for developing non - timeber forest
對水土流失嚴重的經濟林分佈區進行技術改造、做好退耕還林地上發展經濟林的規劃、適當調整經濟林生產布局、建立高效經濟林生產基地、強化政府的宏觀指導是在長防林建設過程中發展經濟林的主要對策。E. mollis had higher genetic diversity among populations, and the reason may be as follows : ( 1 ) those populations are generally large and are not subject to significant loss of variation through small - population effects such as random genetic drift and inbreeding coupled with selection
相對於26種長壽木本特有種和61種狹窄的地理分佈種來說，翅果油樹種群也具有高的遺傳變異水平。這表明翅果油樹種群不存在遺傳上的退化現象。Based on the serious shortage of soil moisture, soil aridity and vegetation recession in this region, the following issues are studied in this dissertation : ( 1 ) the meaning of soil water and its role in the water circulation ; ( 2 ) soil water deficit and its influence to vegetation growth ; ( 3 ) the definition of soil dried layer and the causes of its formation ; ( 4 ) soil dried layer distribution and characteristics in north of shaanxi loess plateau ; ( 5 ) the primary study of measurable index of soil dried layer
本論文主要針對黃土高原土壤水分嚴重虧缺現狀以及因之而形成的土壤干化和林草植被衰退現象，主要對以下幾方面的問題進行了研究： （ 1 ）土壤水分的意義及其在生態系統水分循環過程中的作用； （ 2 ）林草植被土壤水分虧缺狀況及其對植被生長的影響； （ 3 ）土壤干層的涵義及成因分析； （ 4 ）陜北黃土高原土壤干層的分佈及特徵； （ 5 ）土壤干層的量化指標初步研究。With the development of the growth skill craft of gaas single crystal, the density of el2 can be controlled in 1 - 5 1016 / cm ~ 3 and its distribution becomes more uniform in gaas wafer too, so the distribution of carbon seems to be more important to determine the uniformity of electrical resistivity of si - gaas material. so it seems to be very important to study the distribution of carbon and the effect of dislocation on the distribution of carbon
隨著單晶生長技術的發展，通過退火，由於si - gaas中理論化學配比偏離， el2濃度可被控制在1 1 . 5 10 ~ （ 16 ） cm ~ （ - 3 ） ，且分佈均勻。因此碳的分佈就成為決定si - gaas材料電阻率均勻性的一個關鍵因素。所以，研究碳微區均勻性就顯得非常重要。( 4 ) in summer, tropic west pacific ssta decadal change infect precipitation decadal change in south and north of changjiang river maybe by : positive ssta in tropic west pacific weaken the summer monsoon circulation, lead more precipitation in south of changjiang river and less precipitation in north of it, vice versa ; middle north pacific ssta decadal change infect precipitation decadal change in mid - down valley of changjiang river maybe by : when ssta is negative in middle north pacific, the height field in tropic rises obviously, the subtropical high strengthens and extends westward, the northern limit retreats southward, leads upper trough retreats northward and move eastward, meiyu front moves northward, then leads more precipitation in mid - down valley of changjiang river, vice versa ; middle northwest pacific - low latitude mid - east pacific infects precipitation in north china possibly by change the activity of northeast china cyclone
（ 4 ）熱帶西太平洋ssta年代際變化影響夏季中國長江南北降水年代際變化的可能機制是熱帶西太平洋海表溫度正（負）異常減弱（加強）東亞夏季風環流，從而使江南降水增加（減少） ，江北降水減少（增加） ；夏季中部北太平洋ssta年代際變化影響中國長江中下游地區夏季降水年代際變化的可能機制是中部北太平洋海表溫度負異常，將導致熱帶地區高度場普遍增高，副高加強西伸，副高北界南退，致使高空槽北縮東移，梅雨鋒西移北進，中國長江游中游、中卜游降水增多，反之亦反；夏季中高緯西北太平洋一低緯中東太平洋反向距平分佈結構影響中國東北降水的可能機制是低緯中東太平洋海表溫為負異常。Based on the study of strength degradation of material in the fatigue process, a strength degradation model is proposed. a stochastic differential equation, which controls strength degradation, is obtained from the model randomized by markov process. by using the theory of stochastic, the distributions of residual strength at any given lifetime and lifetime of any given residual strength are attained. under a few suitable hypotheses, inverse gaussian distribution of fatigue life is derived, and verified by means of experimental data. the result shows that the model and the method are reasonable
在研究疲勞過程中材料強度退化規律的基礎上，建立了一個強度退化模型.對其進行隨機化處理，得到控制強度退化過程的隨機微分方程.在一定假設條件下，獲得了剩餘強度概率密度函數的封閉解，並推導出疲勞壽命的反高斯分佈形式.給出一種考慮損傷狀態對隨機漲落影響的近似處理方法.與試驗數據的比較結果表明，本文的模型和方法是合理的The results are the key proof for optimizing landscape pattern and carrying out the policies of regional sustainable development
研究成果為進一步分析人口的分佈格局與人口數據空間化；實現生態退耕，區域景觀格局優化以及區域可持續發展提供重要的依據。The main contributions of the second part of this dissertation are focused on the cryptographic properties of logical functions over finite field, with the help of the properties of trace functions, and that of p - polynomials, as well as the permutation theory over finite field : the new definition of chrestenson linear spectrum is given and the relation between the new chrestenson linear spectrum and the chrestenson cyclic spectrum is presented, followed by the inverse formula of logical function over finite field ; the distribution for linear structures of the logical functions over finite field is discussed and the complete construction of logical functions taking on all vectors as linear structures is suggested, which leads to the conception of the extended affine functions over finite field, whose cryptographic properties is similar to that of the affine functions over field gf ( 2 ) and prime field fp ; the relationship between the degeneration of logical functions and the linear structures, the degeneration of logical functions and the support of chrestenson spectrum, as well as the relation between the nonlinearity and the linear structures are discussed ; using the relation of the logical functions over finite field and the vector logical functions over its prime field, we reveal the relationship between the perfect nonlinear functions over finite field and the vector generalized bent functions over its prime field ; the existence or not of the perfect nonlinear functions with any variables over any finite fields is offered, and some methods are proposed to construct the perfect nonlinear functions by using the balanced p - polynomials over finite field
重新定義了有限域上邏輯函數的chrestenson線性譜，考察了新定義的chrestenson線性譜和原來的chrestenson循環譜的關系，並利用一組對偶基給出了有限域上邏輯函數的反演公式；給出了有限域上隨機變量聯合分佈的分解式，並利用隨機變量聯合分佈的分解式對有限域上邏輯函數的密碼性質進行了研究；給出了有限域上邏輯函數與相應素域上向量邏輯函數的關系，探討了它們之間密碼性質的聯系，如平衡性，相關免疫性，擴散性，線性結構以及非線性度等；討論了有限域上邏輯函數各類線性結構之間的關系，並給出了任意點都是線性結構的邏輯函數的全部構造，由此引出了有限域上的「泛仿射函數」的概念；考察了有限域上邏輯函數的退化性與線性結構的關系、退化性與chrestenson譜支集的關系；給出了有限域邏輯函數非線性度的定義，利用有限域上邏輯函數的非線性度與相應素域上向量邏輯函數非線性度的關系，考察了有限域上邏輯函數的非線性度與線性結構的關系；利用有限域上邏輯函數與相信息工程大學博士學位論文應素域上向量邏輯函數的關系，揭示了有限域上的廣義bent函數與相應素域上的廣義bent函數的關系，以及有限域上的完全非線性函數與相應素域上向量廣義bent函數之間的關系;給出了任意有限域上任意。This text was proceeding with geographical space distribution at first ; combine with gis software drawing method to prove relativity between land degradation and poverty
本文首先從地理空間分佈入手，結合gis軟體繪圖方法來論證土地退化與貧困是否存在相關性。Spatial pattern of soil chemical properties in degraded sandy grassland under post - grazing natural restoration in horqin sandy land
放牧干擾后自然恢復的退化沙質草地土壤性狀的空間分佈The heterogeneity in spatial distribution of the above - ground biomass in the degraded grasslands in ordos
鄂爾多斯草地退化過程中植被地上生物量空間分佈的異質性In chapter five, let { xt, i 1 } be - mixing sequences with identical distributions, which belong to domain of normal attraction with non - generational and stable distribution. with probability one, we have limsup a. s
第五章，設x _ n ， n 1是同分佈-混合序列，其分佈屬于特徵指數為（ 0 2 ）的非退化穩定分佈的正則吸引場，證明了依概率1有The doping of in of cdznte wafers was also achieved through annealing by adding in in the annealing sources. the specific parameters were established according to the thermodynamic principles of multi - component system. the properties of the wafers, including composition distribution, optical and electronical properties, were tested before and after annealing
將退火與摻雜過程結合起來，根據多組分熱力學原理制定了退火摻雜的工藝參數，對比研究了摻雜退火前後成分分佈、 in摻入量、紅外透過率以及電阻率的變化情況。Now if we suppose that the rated temperature limit of any chip were identical, confining the highest temperature in the rated limit is the most important, for this purpose i apply the principle of annealing algorithm to the optimization of place distribution design. under the unvaried condition of thermal dispersion, we can get the least temperature of the maximum value in some kind of chip array
為了使得電子元件最大溫度負荷在特定散熱狀態下達到最低（低於額定的最高溫度值） ，我們將模擬退火演算法的優化設計思想應用到電子元件陣列的布局優化中，使得在不改變外部散熱條件的情況下，僅僅通過電子元件位置分佈的改變就取得降低其最高工作溫度的效果。At present, local morphology was used to discriminate ferroelectric phase area and non - ferroelectric phase area, but once morphology variation of phase transformation was tiny, the ferroelectric phase area and non - ferroelectric phase area was hard to discriminate only from morphology view. however, the introduction of sndm can overcome this limitation, and visualize the investigation of annealing process. combining x - ray diffraction, atomic force microscopy ( afm ) with sndm, the phase transformation process of pzt thin films with different annealing time and of plt films with different annealing temperature were studied, respectively
結合原子力顯微鏡（ afm ） 、 sndm 、 x射線衍射（ xrd ） ，通過對微區形貌、電容分佈變化和鐵電薄膜結晶情況的表徵和分析，研究了pzt鐵電薄膜和plt鐵電薄膜的晶化過程，分析了不同退火時間對pzt鐵電薄膜微結構，不同退火溫度對plt薄膜的微結構和微區極化分佈的影響，有效克服僅依據形貌特徵判定鐵電相與非鐵電相的局限性，實現鐵電薄膜微區晶化過程的可視化分析，豐富了晶化過程的研究方法。分享友人