勻質系數 的英文怎麼說
中文拼音 [yúnzhíxìshǔ]
勻質系數
英文
coefficient of uniformity-
Firstly, the surface characteristic of polystyrene particle is changed from water detesting to water intimity by using special techniques and admixtures so mat the compound quality with inorganic materials is insured. secondly, the contradiction between the weight and strength is solved through optimizing the particle size and using composite fiber and the best heat conductivity is achieved under the condition that the necessary strength is met. in the research process, the author solved the problem of fiber dispersing in insulating materials so that the contraction of the material is controlled
課題研究中，首先採用特殊的改性工藝及外加劑實現對聚苯乙烯顆粒表面的成功改性，使其表面由憎水轉化為完全親水，確保與無機材料的復合質量；其次，通過採用優化骨料級配及使用復合纖維等措施解決了保溫材料的輕質與強度的矛盾，使保溫材料在滿足必要的強度的前提下，導熱系數降至最小；並且，課題研究中成功解決了纖維在保溫材料中均勻分散的問題，達到了抑制保溫材料收縮的目的；最後，通過採用復合外加劑、合適的膠凝材料及合理的配比等措施確保該保溫材料具有良好的和易性，滿足施工的要求。Fortunately, the modern geodetic measurements such as the global positioning system ( gps ) technique can overcome the shortage of the geological and seismographic methods in the time dimension ; and yet, the coverage of the geodetic survey stations is not sufficient. as a result, it is necessary to employ numerical simulation to investigate the continuous deformation of the crust
而以全球定位系統（ gps ）等技術為主的大地測量方法彌補了地質和地震學方法在時間維上的不足，但大地測量方法存在測點覆蓋不足及測點地理分佈不均勻的缺點，因此，要得到連續的地殼形變場有必要藉助數值模擬方法。A soil having a uniformity coefficient smaller than 2 is considered uniform.
均勻系數小於2的土壤可視為均質土。We obtained the uniform data distribution from discrete data points by inserting spatial dots and then set up digital elevation model ( dem ) of correlative area through constructing mutual linked triangle net. the isoline graph was implemented based on this model. during the processes, we combined the technology of stratification computing when inserting special dots in fault area with the technology of stratification triangle net in fault area for dealing with thrust data
然後介紹了在本研究中構造逆斷層地質等值線的基本思路：從離散數據點結構出發，採用空間數據內插方法進行數據的均勻化，通過三角剖分構造出相互連接的三角形網路結構來建立起相關區域內的數字高程模型，利用該模型構造出相應的地質等值線圖，其中使用擴展點與斷層區的關系屬性進行斷層區分層空間插值計算處理和斷層區域的分層三角形網格化處理相結合的技術，實現逆斷層數據的處理和等值線繪制。In this article the conclusion was got from some experiments and researches that the crux of the matter is to solve the seepage stability of the soil and it is possible that gravelly soil is made into impervious core with the protection of filter
但是存在土料的含礫量不均勻、粘粒含量低、滲透系數偏大、天然含水量偏低、塑性較差等缺陷。試驗研究還認為，只要解決好滲透穩定問題，做好反濾保護，礫質土作心墻防滲體是可行的。Principal components analysis showed that the first four principal components variance accumulation contribution rate amounts to 89. 53 %, which reflected most of the variance information as listed characters above
通徑分析結果顯示，直接通徑系數大小排序，產量因素性狀依次為單株成鈴單鈴子棉重子指衣分；纖維品質性狀依次為紡紗均勻性指數麥克隆值整齊度伸長率比強度2 . 5 %跨長。By employing the theory of operator representation, the reflection / transmission operator is decomposed into the form of double domains in the scheme, so it is adaptable to laterally heterogeneous media and fluctuating reflectors, can mimic ava of reflections when the incident angle is less than 45
文中利用運算元可分表示理論將反射透射運算元分解成適合於雙域（空間域和波數域）運算的表達形式，使得本文得到的地震波數值模擬演算法可適應於一定程度橫向非均勻介質和界面起伏情況，在入射角小於45時能夠準確模擬振幅隨入射角（ ava ）的關系。The macro - mechanical properties ( the elastic constants ) of the fractured rocks can be connected with the micro - parameter of crack ( crack number density )
這個模型將微觀隨機參數（裂紋數密度）與非均勻裂縫介質的宏觀性質（彈性常數）直接聯系起來。Three finite - difference methods, i. e., stagger grid, implicit and explicit algorithms, are analyzed in detail. multi - grid algorithm is firstly introduced in elastic wave simulation, to solve for the stability problem inherent in stagger grid and implicit algorithm, also for the efficiency problem inherent in explicit algorithm, and the precision, stability and efficiency for simulation of elastic wave arc increased by multi - grid method. phase - delay method is provided to effectively absorb boundary reflection and increase efficiency for wave motion simulation, based on phase delay and amplitude decaying features along wave propagation
在水平分層介質接收函數的波形反演研究的基礎上，本文系統闡述了非均勻介質中彈性波傳播數值模擬常用的三種有限差分方法：顯式差分、隱式差分和交錯網格法，首次將多重網格演算法應用於彈性波方程的數值模擬問題，克服了交錯網格法和顯式差分法穩定性差，以及隱式差分法計算效率低的缺點，大大提高了彈性波數值模擬的精度、穩定性和計算效率。Generally speaking, the high group velocity and low attenuation factor and high qr in the same area, but relatively low group velocity and high attenuation factor and low qr in the same area in china is the general distribution
在不同周期，面波衰減系數或品質因子在整個中國大陸區域分佈是不均勻的；總體表現為高群速度分佈的區域呈現高叢和低衰減系數、低群速度分佈的區域呈現低叢和高衰減系數分佈的特點。The polyacrylonitrile have no use to improve the homogeneity of concrete. the homogeneity of concrete have bad effect to compression strength, but the effect to chloride ion coefficient of diffusion is not obvious. for concrete used generality, if it ’ s homogeneity is acceptable ( k 7 % ), the percentage of lost of the compression strength will lower than 10 %
勻質性對抗壓強度的影響較大，對氯離子滲透系數的影響不明顯，對於一般用途的混凝土，勻質性良好（ k 4 % ）時，強度損失在5 %以內，勻質性合格（ k 7 % ）時，強度損失在10 %以內;對于深層澆注的混凝土，離析度k 3 %時上下層強度的差異率才能保證在5 %以內。Using the theories of probability, algebra and number theory comprehensively, we investigate a class of boolean functions with three - valued walsh spectrum in the first part of this dissertation : the properties of the extended semi - bent functions, which are constructed from any two bent functions, are studied, followed by the structure characteristics of the boolean functions satisfying propagation criterion with respect to all but two vectors ; the definition and cryptographic properties of k - order quasi - bent functions are proposed whose walsh spectrum takes on only three values. some sufficient and necessary conditions are offered to decide whether a boolean function is a k - order quasi - bent function ; a special method is presented to construct the k - order quasi - bent functions, whose cryptographic properties are explored by the matrix method, which is different from the method of walsh spectrum and that of autocorrelation of boolean functions ; the application of this kind of boolean functions in the fields of stream cipher, communications and block ciphers is discussed, which shows the great importance of the fc - order quasi - bent functions ; some methodology are proposed to construct the k - order quasi - bent functions, including the complete construction by using the characteristic matrices of boolean functions, and the recursive method by two known k - order quasi - bent functions we further extend our investigation to the ring zp, where p is a prime, and the similar results are presented as far as the p - valued quasi - generalized - bent functions are considered
本文首先綜合運用概率論、代數學、數論等基礎學科的理論知識，並以頻譜理論作為主要研究工具，對一類譜值分佈相對均勻的函數? ?廣半bent函數、 k階擬bent函數和p值k階擬廣義bent函數進行了系統、深入的研究，給出了廣半bent函數定義，並探討了廣半bent函數的密碼學性質；給出了k階擬bent函數和p值k階擬廣義bent函數的定義及等價判別條件；討論了k階擬bent函數和p值k階擬廣義bent函數與部分bent函數和p值廣義部分bent函數的關系，探討了它們的密碼學性質；給出了k階擬bent函數和p值k階擬廣義bent函數的典型構造方法，並將對k階擬bent函數的密碼性質的研究轉化到對一類特殊的矩陣的研究上；利用布爾函數的特徵矩陣原則上給出了k階擬bent函數的一種完全構造方法，還給出了從已有的p值k階擬廣義bent函數出發，遞歸構造變元個數更多的p值k階擬廣義bent函數的方法；初步探討了k階擬bent函數在序列密碼、分組密碼以及通信中的應用；給出了一類布爾函數walsh譜的分解式，並利用這類布爾函數的walsh譜分解式給出了一類近似穩定的布爾函數的構造，特殊情形下為k階擬bent函數；利用代數數論的知識考察了p值k階擬廣義bent函數的譜特徵，並給出了k階擬廣義bent函數與所有仿射函數的符合率特徵等等。Using the microwave selective heating property for materials, by setup equivalent equation, and first time inducing the electromagnetic field perturbation theory to the design of heating materials for substrate in mpcvd, three temperature distribution modes were established, including temperature distribution comprehensive mode of inhomogeneous plasma, temperature distribution composite mode of composite substrate materials, temperature distribution perturbation mode of composite materials, which ii provided an whole new technology route to the design of substrate heating system in mpcvd and guided the preparation of heating materials for substrate. and then the heating materials for substrate were designed and optimized to obtain large area homogeneous temperature distribution even larger than substrate holder ' s diameter. as an important part, this thesis researched the nucleation and growth of diamond films in mpcvd, systematically researched the effects of substrate pretreatment, methane concentration, deposition pressure and substrate temperature etc experimental technologic parameters on diamond films " quality on ( 100 ) single crystal silicon substrate in the process of mpcvd, characterized the films qualities in laser raman spectra ( raman ), x - ray diffraction ( xrd ), scanning electron microscopy ( sem ), infrared transmission spectra ( ir ), atomic force microscopy ( afm ), determined the optimum parameters for mpcvd high quality diamond in the mpcvd - 4 mode system
該系統可通過沉積參數的精確控制，以控制沉積過程，減少金剛石膜生長過程中的缺陷，並採用光纖光譜儀檢測分析等離子體的可見光光譜以監測微波等離體化學氣相沉積過程；利用微波對材料的選擇加熱特性，通過構造等效方程，並首次將電磁場攝動理論引入到mpcvd的基片加熱材料的設計中，建立了非均勻等離子體溫度場綜合模型、復合介質基片材料的復合溫度場模型及復合介質材料溫度場攝動模型，為mpcvd的基片加熱系統設計提供了一條全新的技術路線以指導基片加熱材料的制備，並對基片加熱材料進行了設計和優選，以獲取大面積均勻的溫度場區，甚至獲得大於基片臺尺寸的均勻溫度區；作為研究重點之一，開展了微波等離體化學氣相沉積金剛石的成核與生長研究，系統地研究了在（ 100 ）單晶硅基片上mpcvd沉積金剛石膜的實驗過程中，基片預處理、甲烷濃度、沉積氣壓、基體溫度等不同實驗工藝參數對金剛石薄膜質量的影響，分別用raman光譜、 x射線衍射（ xrd ） 、掃描電鏡（ sem ） 、紅外透射光譜（ ir ） 、原子力顯微鏡（ afm ）對薄膜進行了表徵，確立了該系統上mpcvd金剛石膜的最佳的實驗工藝參數。Because interaction between pile - raft foundations and soil is very complex, what ' s more, there are many effect factors, piles and caps ( or rafts ) form a common working system whose bearing capacity and settlement are affected and restricted by interaction between them. the method of computing settlement that code provides is not a pure theoretic method and it is an experiential method in essence. in this paper, based on engineering designs of taiyuan, in - site experiments, observation data of structure settlement and so on, settlement is analyzed and computed by applying mindlin stress formula and using software matlab
現規范推薦的樁基沉降計算方法，並不是一種純理論的方法，其實質是一種經驗擬合的方法；本文結合太原地區的工程設計、現場試驗、主體沉降觀測資料等，運用明德林（ mindlin ）應力公式，然後按分層總和法原理，採用matlab軟體計算程序進行沉降計算、分析，結果表明：高層建築樁?筏基礎沉降較小，且較均勻，得出了太原地區的樁?筏基礎沉降計算的經驗系數_ p ，從而使設計、計算結果更接近於工程實際，同時考慮筏板對上部結構荷載的分擔是合理的、先進的，對高層建築樁?筏基礎加強了認識。Firstly, analyzed the present problems of fed display quality such as luminance non - uniformity, grayscale loss and high power consumption on fed driving system. secondly, proposed new methods and thinking from circuit aspect for improving display quality of fed according to the matured digital image processing and fpga technologies. and such methods have been applied to the low work function printable 25 inch color vga fed. lastly, analyzed and evaluated the image quality of fed processed
首先，針對fed顯示器現存的亮度不均勻、灰度失真等質量缺陷和fed驅動系統功耗較高的問題進行了分析討論和歸納總結;其次，根據成熟的數字圖像處理方法和fpga技術，結合fed顯示屏的自身特性，提出通過電路設計來改善、提高fed圖像顯示質量的新方法與新思路;然後將其應用於低逸出功印刷型25英寸vga級彩色fed驅動系統中;最後，對經過圖像處理的fed演示樣機的圖像質量進行了分析與評價。The important parts of this work consist of : 1. the high frequency asymptotic evaluation of wave equations in nonhomogeneous medium by maslov ' s method is systematically studied, and formulations of the high frequency asymptotic evaluation in nonhomogeneous medium which varying only in one direction are constructed
本論文的工作作為國家自然科學基金地震波傳播與成像項目（ no . 40174032 ）的一部分，得到如下結果： （一）論文分析了利用maslov方法求解非均勻介質中波動方程高頻近似解的基本原理和求解過程，構造了介質系數只在一個方向變化時波動方程高頻近似解的通用計算公式。Firstly, an estimation algorithm for spectrum of the ct system is presented in the paper by using a standard cylinder or wedge phantom, where the mass attenuation coefficient of the contained material of the phantom is not necessarily to be known
本文首先給出了由標準均勻圓柱狀模體或楔狀模體估計ct系統的x射線能譜的演算法，該演算法不必已知構成模體的物質關于不同能量的光子的質量衰減系數。In addition, by means of landscape diversity, evenness, dominance, fragmentation, fractal dimension and statistics, the author respectively analyzed landforms, plant, soil and so on in the original ecosystem of the typical dumping site, the damaged ecosystem and the rehabilitated ecosystem. in fact, landscape matrix has been completely converted from the original ecosystem to the rehabilitated ecosystem. the indexes of diversity, evenness and dominance in forest landscape have sharply increased, but segregation decreased, which demonstrates that the rehabilitated ecosystem has been a reasonable and fine artificial ecosystem under the control of human
在此研究的基礎上，採用景觀多樣性指數、優勢度指數、均勻度指數和破碎度指數，以及分維方法和統計分析相結合的方法，對礦區典型排土場的原生態系統、破壞后的生態系統、重建生態系統的地貌、植被、土壤等景觀要素進行了分析，結果表明：從原生態系統到重建生態系統，景觀基質發生了根本性的變化，林地的多樣性、均勻性、優勢度大幅度增加，分離度降低，顯示了重建生態系統在人為的調控下，已初步形成一個結構較為合理、功能良好的人工復合生態系統。Firstly, as a forward problem is solved for each iteration of ga reconstruction, calculating the electric field for a given distribution permitivity and driving source - this aspect will be treated with more detail. the thesis uses finite element method ( fem ) to solve it, because fem can conveniently handle inhomogeneous dielectric, converge well, and spare computing time by compacting the matrix
本文首先建立了介電成像的數學模型，採用有限元方法求解正問題，有限元方法的優點在於能方便地處理非均勻介質、具有良好的收斂性、可以壓縮系數矩陣而節省計算時間，這有利於應用遺傳演算法進行優化。The asphalt concrete has very good flexibility to fit different kinds of settlements. if there were cracks, the asphalt concrete would be able to self - heal up with the act of the dam gravity. besides that, the impervious asphalt concrete is much easier to construct than the impervious earth material
碾壓式瀝青混凝土的滲透系數一般小於1 10 ~ （ - 7 ） 10 ~ （ - 8 ） cm s ；瀝青混凝土具有較好的柔性，能較好地適應各種不均勻沉陷，如果一旦發生裂縫，在壩體應力作用下，瀝青混凝土有自愈閉合能力；瀝青混凝土防滲體比土質防滲體易於施工，在多雨季節更顯出其優越性。分享友人