漸變密度 的英文怎麼說
中文拼音 [jiānbiànmìdù]
漸變密度
英文
graded density-
Effect of density gradients on haptic discrimination
質地密度逐漸變化對觸覺識別的作用A monte carlo algorithm was presented to model the relation between the scattering phenomenon, depolarization changes and sea water depth, it is discovered that the radius of scattering point and the degree of depolarization increase with increasing of the sea water depth. at last, a optical engineering software ( lighttools ) is introduced to simulate optical scattering in the deep sea water, and studys the corelation between scattering and relative refractive index, particle density and particle size in the sea water. the experiment results show that the intensity of scattering will increase evidently with the increasing of particle size, particle density and relative refractive index. the methods and results in the article provide the basic theory and experiment validation for improving performance of communication, detection and imaging under sea water
本文以球形粒子的mie散射理論、 stokes矢量法以及mueller矩陣來研究海水的散射特性和散射中的退偏振度變化;通過montecarlo方法模擬藍綠激光在海水傳輸過程中的散射現象以及散射中的退偏度變化與海水深度的關系，發現隨著海水深度的增加，散射后的光斑半徑、退偏振度將逐漸增大。最後通過光學工程軟體（ lighttools ）對海水中的散射進行模擬實驗，研究散射與海水中粒子密度、粒子大小和相對折射率的關系。實驗結果表明，隨著粒子半徑、粒子密度和相對折射率的增加，散射的強度將顯著增加。Expanding the system ' s hamiltonian to a real symmetric matrix in an appropriate orthogonal basis vector and then diagonalizing it, we get the energy spectrum of the system and calculate the energy level spacing distribution function and the spectral rigidity. then we study the statistical character of the energy spectrum under the changing of magnetic field intension and find that the system ' s motion transfers from regular to chaos gradually
將系統的哈密頓量在一個適當的正交基矢下展開並對角化，得到系統的能譜，分別計算系統能譜的能級間距分佈函數和譜剛度，研究了該系統量子能譜的統計特徵隨磁感應強度大小的改變而表現出的系統運動由規則到混沌的漸進變化。Recent years, the using of piezoelectric sensors becomes a focus in novel biosensors research. the basic principle is that the characters of its oscillation are highly responded with the changes of the surface mass adsorption, or the physic characters in the reaction system including density, viscosity, conductivity and so on. a piezoelectric biosensor with a nanogram sensitivity could be constructed through a reasonable biological processing and structure designing to the piezoelectric quartz crystal
近年來，壓電傳感器檢測技術逐漸成為生物分析中的研究熱點，其基本原理是利用石英晶體振蕩特性對石英晶體表面質量負載（質量效應）和反應體系物理性狀如密度、粘度、電導率（非質量效應）等的改變具有高度敏感的特性，通過對石英晶體進行適當的生物學處理和結構設計，構建出具有具有ng級檢測能力的生物傳感器。And through the analysis of group differences reflected, on the social network, by the work force in different groups with different professional role in the present rural area, this research gives the prophecy of the evolving tendency of the social supporting network of the work force in the rural area in china. the thesis is divided into four parts : the first part expatiates the focus of attention, purpose, significance, innovation, feasibility, research idea and research methodology of the paper. the second part, through the five aspects of the scale of the social supporting network, relation constitution, compactness degree, convergence and diversity, describes and analyses the general character of the social supporting network of the work force of the rural area, and roots out that the social supporting network of work force in rural area in china is in the process of slow and gradual transform
全文共分四大部分：第一部分，闡述本研究的出發點、目的、意義、創新性、可行性、研究思路以及研究方法；第二部分，從社會支持網的規模、關系構成、緊密程度、趨同性、異質性等五個方面，描述和分析了農村勞動人口社會支持網的一般特徵，發現當前我國農村勞動人口社會支持網，正處于較緩慢的漸進的變革過程中，傳統農民的社會支持網已經開始呈現出一定的多樣性和豐富性的特點；第三部分，通過控制職業角色分化因素，對不同職業角色群體勞動人口的社會支持網進行差異性分析，發現較之農業勞動者群體而言，工商業勞動者群體的社會支持網更為復雜與多樣，其社會效用也更大；第四部分，在概括本文研究結論的基礎上，預測農村勞動人口社會支持網的發展趨勢，明確現代社會網的創新方向。The in - plane equivalent elastic modulus and tensile strength of stitched composite laminates are studied, and it ' s found that the in - plane equivalent elastic modulus decreases with the increase of stitch density, stitch thread diameter, maximal misalignment angle and the distortion width, and the range is about 5 %. the tensile strength of stitched composite laminate increases with the increase of stitch step and decreases with the stitch space. the
研究結果表明：隨著縫紉密度、縫紉線直徑、最大纖維偏轉角和縫紉變形區寬度的增加，縫紉復合材料層合板面內等效模量逐漸降低，最大降幅一般在5 %左右；縫紉復合材料層合板的拉伸強度隨縫紉針距的增加而增大，隨縫紉行距的增加而降低，因此縫紉密度對拉伸強度的影響程度要看具體的縫紉針距和行距。The present invent ion utilizes the top loading technique and the smooth tapering technique to create the design of a compact and built - in antenna which will provide a planar antenna structure with broad bandwidth and high radiation efficiency
饋入傳輸線的寬度大致與漸變帶段的底邊同寬，且頂邊與漸變帶段的底邊密接，而底邊藕接至頻電路。You can generate maps that show data variances through shading, dot density, or graduated symbols
您可以通過陰影、點密度或漸變形式來生成顯示數據變化的地圖。But in more situations the random variables generating counting processes may not independent identically distributed, and in all kinds of dependent relations, negative association ( na ) and positive association ( pa ) are commonly seen. the research and apply in this aspect are rather valuable. in chap 2 we prove wald inequalities and fundamental renewal theorems of renewal counting processes generated by na sequences and pa sequences ; in chap 3 we are enlightened by cheng and wang [ 8 ], extend some results in gut and steinebach [ 7 ], obtain the precise asymptotics for renewal counting processes and depict the convergence rate and limit value of renewal counting processes precisely ; at last, in the study of na sequences, su, zhao and wang ( 1996 ) [ 9 ], lin ( 1997 ) [ 10 ] have proved the weak convergence for partial sums of stong stationary na sequences. however product sums are the generalization of partial sums and also the special condition of more general u - statistic
但在更多的場合中，構成計數過程的隨機變量未必相互獨立，而在各種相依關系中，負相協（ na ）和正相協（ pa ）是頗為常見的關系，這方面的研究和應用也是頗有價值的，本文的第二章證明了na列和pa列構成的更新計數過程的wald不等式和基本更新定理的一些初步結果；本文的第三章則是受到cheng和wang [ 8 ]的啟發，推廣了gut和steinebach [ 7 ] ）中的一些結論，從而得到了更新計數過程在一般吸引場下的精緻漸近性，對更新計數過程的收斂速度及極限狀態進行精緻的刻畫；最後，在有關na列的研究中，蘇淳，趙林成和王岳寶（ 1996 ） 》 [ 9 ] ，林正炎（ 1997 ） [ 10 ]已經證明了強平穩na列的部分和過程的弱收斂性，而乘積和是部分和的一般化，也是更一般的u統計量的特況，它與部分和有許多密切的聯系又有一些實質性的區別，因此，本文的第四章就將討論強平穩na列的乘積和過程的弱收斂性，因為計數過程也是一種部分和，也可以構成乘積和，這個結果為研究計數過程的弱收斂性作了一些準備。In a spiral wave, the orbits are progressively misaligned, so that the region of enhanced density is a curved line
在螺旋波里，軌道則是逐漸彎曲，所以密度變大的區域是曲線狀。Changing the grading of sic particles not only affects the strength and pile density, but also modifies the phase compositions and microstructure of the material. with the reducing of sic particles, the strength of the material increases obviously. the nitrification scheme has the greatest influence on phase compositions and microstructure " of si3n4 ( si2on2 ) - sic, after two continuous nitrification reacting peak and short - time high - temperature treating, the best properties can be obtained ; and the residual strength of the composite is much higher after the thermal shock resistance test, which shows that the material possesses excellent thermal shock resistance
本論文較全面地探討促進強度和顯微結構良好的si _ 3n _ 4 （ si _ 2on _ 2 ）結合相的實驗條件，實驗數據顯示：引入適量的燒結助劑能夠促進si _ 3n _ 4 （ si _ 2on _ 2 ）的生成和晶粒的長大，而過量時，其促進作用反而下降；隨著si粉加入量增加，生成的結合相明顯增多，復合材料的性能顯著提高；改變sic顆粒級配不僅影響復合材料的強度與堆積密度，而且對復合材料的物相與顯微結構也有影響，隨著顆粒逐漸細化，材料的強度有較大的提高；對復合材料的強度、物相與顯微結構影響最大的是氮化制度，經過兩個氮化高峰連續的反應和短時間的高溫后處理得到的復合材料性能最好；通過抗熱震性能實驗后復合材料的殘余強度較高，顯示出較好的抗熱震性能。( 2 ) because of t he variability of rock subjected to outside action, three new conceptions : postive damage basic damage and negative damage, are suggested, which can deal with the condition that rock density became large. ( 3 ) the present damage variables based on ct number mostly include ct average number of the rock without damage, which is difficult to measure, so a new damage variable, which includes the average ct number is proposed, on the other hand, strain equal theory is generalized because the one put foreword by lemaitre is not good enough to use. ( 4 ) a axial damage constitutive equation is proposed and testified. ( 5 ) with the circle times, the damage propagation laws of two different rocks, subjected to circle of freezing and thawing, are studied, and in the analysis process, traditional analysis method including average ct number and is used, some important conclusions are reached : inner damage of soft rock containing a large mount of apertures is largely propagating with the time increasement of circle, however, at the preliminary time, the hard rock containing a small mount of aperture is a little propagating, at late time, the influence become large ; ( 6 ) zone separation and statistics frequency put forward is used to analysized the three different damage propagation in the open circumstance, when they are subjected to the different circle times of freezing and thawing, in which the temperature variability is linear, different freezing rate, and different freezing temperature, and no water is supplied during the test
在研究過程中本文主要做了以下工作： （ 1 ）針對巖石損傷變化較小時，運用ct均值和方差分析不方便的缺陷，本文提出運用對ct數范圍劃分區段的方法，根據各區段統計頻率的變化規律來分析損傷擴展狀況； （ 2 ）針對巖石受到外部作用的多變性，本文提出了基準損傷，正損傷，負損傷的概念，在某種程度上考慮了巖石受到外部作用時的壓密情況； （ 3 ）現有的基於ct數的損傷變量大多需要用到巖石基體的ct均值，這實際上是很難觀測到的，因此本文建議了一個可運用巖石初始狀態ct均值的損傷變量，由於現有的勒邁特教授應變等價原理使用上的不便，本文在其基礎上進行了推廣； （ 4 ）建議了一個可用巖石初始狀態ct數和彈性模量的單軸損傷本構方程，並用算例進行了驗證； （ 5 ）對兩種不同巖石在開放環境下受到凍融循環作用且融化過程中補水時，內部損傷隨凍融循環次數增加的擴展規律進行了探討，主要運用了常規的ct均值和ct方差的分析方法進行分析，試驗發現：對于孔隙率和含水率較高，密度和強度較低的軟弱巖石，凍融循環次數對損傷結構的擴展有明顯的影響，而對于孔隙率和含水率較低，密度和強度較高的硬巖，凍融循環次數對其損傷結構擴展初期由於含水率低的原因，影響不是太大，而後期由於水補給后，含水率較高的原因，凍融影響逐漸增大； （ 6 ）運用了本文提出的區段劃分和統計頻率的方法，深入地分析了開放環境下的線性溫度變化的凍融循環次數，凍結溫度，凍結速度不同巖石作用時，其內部損傷隨凍融循環次數，凍結速度和凍結溫度變化的擴展規律，需要指出的是除了在試驗前飽水外，凍融過程中沒有補水。分享友人