退化解 的英文怎麼說

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。

The existence and blowup of a nonlinear degenerate parabolic equation

一類非線性退化拋物型方程解的存在性與爆破

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。

A new fusion method based on resolution degradation model for panchromatic and multi - spectral images

基於解析度退化模型的全色和多光譜遙感影像融合方法

Rats, pests and poisonous herbs had been wiped out from a total area of 1, 345, 700 hectares, easing the degeneration of the pastures to a certain measure

4萬公頃，滅鼠、滅蟲、滅毒草面積134 57萬公頃，在一定程度上緩解了草場退化進程。

These examples help explain why most environmental scientists believe that over the next few decades, the danger of degradation and exhaustion is greatest for potentially renewable resources, not nonrenewable resources ( except for petroleum and perhaps a few scarce minerals for which we can ' t find economically and environmently acceptable substitutes )

這些例子有助於解釋為什麼大多數環境科學家相信在今後幾十年內，可再生資源被退化和枯竭的危險性是最大的，而不是不可再生資源（石油，還有少數幾種我們未能找到經濟和環保的代替品的稀有礦物除外） 。

We study in this paper the filtration problem in partially saturated layered porous media in one dimensional. that is the thid problem boundary value problem of on dimensional degenerate quasi - linear elliptic - parabolic equation with discontinuous coeffi - cients. the existence, uniquess of the solutions and some properties of the solution are proved

本文主要討論一維有限雙層多孔介質中部分飽和的滲流問題，即具有間斷系數的一維擬線性橢圓-拋物退化方程的第三邊值問題。證明了該問題的解的存在性、唯一性及弱解的邊界性質。

In this thesis we mainly study degenerate - times integrated operater families and its applications to abstract cauchy problems, and we study the mean ergodicty theorems and the convergence rates of ergodic limits and approximation for k - regularized resolvent families

本文我們主要研究退化（ r ） -次積分預解運算元族及它對抽象cauchy問題的應用，並且研究k -正則預解運算元族的平均遍歷定理和遍歷極限的收斂率。

The strategy and measures to prevent the soil degradation of pinus sylvestris var. mongolica were put forward, including application of thinning rationally for existing dense plantations and establishment of mixture forest for new plantations

解決當前人工林退化的主要措施是因地制宜進行間伐或輪伐，改善林地微生態條件，盡量避免營造人工純林，建議營造混交林。

Round, smooth nuclear surface, and uniform nuclear pore changed into bumping surface and expanding nuclear pore, then the nuclei broken and disappeared ; 2 ) the degenerate and disappear of cell organelle and senescence of the flag leaf were obviously faster during the ripe of grain ; 3 ) the degenerate and senescence of chloroplast was faster than that of mitochondria ; 4 ) the nuclear of leaf cells broken and disappeared faster than that of the leaf bumdles

即核呈球形，表面光滑，核孔勻稱核表面凸凹，部分核孔變大核膜破裂，核解體，消失； （ 2 ）在籽粒成熟期小麥旗葉衰老及其細胞器退化消失明顯加快； （ 3 ）細胞中葉綠體的退化、消失比線粒體稍快； （ 4 ）葉肉細胞的細胞核比維管束韌皮組織細胞核解體消失稍快。

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 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。

The degenerate elliptic problems we shall study is very closely related to rigidity problems arising from infinitesimal isometric deformation, as well as other geometry problem, such as minimal surface in hyperbolic space. in particular, the existence of solution with high order regularity is very important to investigate geometry problems. one would like to know under what conditions the solution of such equations are as smooth as the given data

通過構造輔助邊值問題，建立了各種能量不等式，並利用這些先驗估計，以及banach - saks定理得到了h ~ 1弱解存在性；利用退化橢圓型方程弱解與強解的一致性和已知的先驗估計，還得到h ~ 1弱解的唯一性。

In the artificial - planting, the strain of cordyceps militaris is easy to degenerate. at present, the study about the fungus in cordyceps genus are just in the identification of fungi 、 the nutrition analysis 、 the using in medicine and artificial - planting. although, it could reduce the lost by the usual breeding way, we could not solve the problem at basic. about the degeneration of strain, people mostly use the gender - cycling 、 the fusing - cytoplasmic technology and the genetic - engineering method to reform the strain. most of people use moleculor method in the study of relationships among the species and between the species

用常規選育方法雖然能減少一定的損失，但不能從根本上解決菌種退化這一長期困擾企業生產的問題。針對菌種退化問題，主要是利用有性循環、原生質體融合和遺傳工程等途徑進行菌株改良，應用分子生物學手段只是研究種內、種間的系統關系等，而關于菌種退化遺傳機理的研究尚未見報道。菌種退化是菌類栽培過程中普遍存在的，也是生產當中迫切希望得到解決的問題。

It may becomes the hi - new technical substitute of the conventional seedling techniques having been used for nearly 2000 years. it is the only great system of technique that liberate the tissue culture from lab into field while maintaining its high coefficient and high speed characters, and adding new characters of low cost, in cloning many species

中國加入wto后，傳統的以產糧為主的農業同樣面對嚴峻的挑戰和機遇，糧食產量過剩，供大於求，水果品種退化，產量低果質差傳統的」當家菜」價低質次，這些已不能滿足已解決溫飽問題的人們需要。

The project is mostly implemented in the poor areas of western china in that poverty and environment degradation are interrelated closely. so the project is faced with the problem of developing economy and alleviating poverty as well as reconstructing ecological environment. how to utilize the chance of " reconverting cultivated land into forest and grassland " to promote poverty alleviated is the subject of this paper

作為一項生態重建工程，由於貧困與環境退化之間的高度關聯性，使得「一退兩還」的實施地域更多的是在西部貧困地區，由而賦予了「一退兩還」以更多的功能，即在促使生態環境恢復的同時，也承擔著發展西部地區經濟、緩解退還地區貧困的歷史使命。

Based on above - mentioned analysis, the strategy and measures to prevent the soil fertility quality degradation of artificial picea mature forest and improve the stand ecological environment were put forward, including the rational management of inter - cutting down and fostering after artificial picea forest matured. because conifer - hardwood forests generally contain more tree species than pure coniferous forest, and their structure also is more complex, forestation in subalpine of western sichuan should be conifer - hardwood forests

林地土壤有機質主要來源於凋落物的分解，並受其分解速率的控制，解決當前人工成熟林地土壤退化的主要措施應為林地凋落物分解創造條件，即因地制宜地對成熟人工林進行間伐或輪伐，當前在該區域造林應避免營造針葉純林。

In the end, the delegates visited the production base of seed potatoes at shangtuhai township. this pilot site was selected by the project to help farmers solve the problem of potato degeneration

最後，代表們來到上土亥鄉種薯生產基地，該示範點是項目為了幫助農民解決馬鈴薯退化問題而選取的。

This paper studies the corner layer behavior in quasi linear systems with turning points. under the appropriate conditions and by usin g the theory of differential inequality, the existence of the solution and its c omponentwise uniformly valid asymptotic estimation are obtained when the reduced solution does not have a continuous first - derivative in some point of ( 0, 1 )

奇攝動轉向點問題是來自量子力學及其他物理力學中的重要問題，特別對非線性系統的轉向點問題，已有的結果甚少，文章研究一類具有轉向點的擬線性系統的角層現象，在適當的假設條件下，利用微分不等式方法證明了當其退化解在（ 0 ， 1 ）內某些點上一階導數不連續時解的存在性，並得到了解的按分量的一致有效的漸近估計。

Under suitable conditions, using the theory of differential inequalities the asymptotic behavior of solution for the initial boundary value problems are studied, which reduced problems possess two intersecting solutions

在適當的條件下，利用微分不等式理論，討論了退化解具有兩個交叉解的初值問題解的漸近性態。