aggregate structure 中文意思是什麼
aggregate structure
解釋
集合體構造-
Pgla, one biodegradable material, is used to braid the conduits, which integrates the merits of its two aggregate ingredients. it is easy to adjust degrading rate to match the regeneration period of the nerve by changing the proportion of the two ingredients. the conduits are fabricated enlacing 2. 2 millimeter stainless steel on the braiding machine with 16 spindles using 2700 tex yarns. four conduits with different structures are braided : common braided structure, braided structure using braided ply yarn, braided structure with inserted reinforcing yarn and adding bridge - yarn structure, the last two conduits are new attempts to look for good shape - keeping structure, being able to lead the nerve to regenerate effectively
本課題選用可生物降解材料聚乙丙交酯（ pgla ）為原料，它兼具兩種聚合成分的優點，可以通過調節兩者聚合的配比來調節它的降解周期，使與神經再生的周期相吻合。導管的製作是在16錠編織機上採用2700tex紗線進行帶芯編織，芯子為直徑2 . 2mm的不銹鋼絲。共製作四種結構神經導管，分別為普通結構神經導管、編織線結構神經導管、加筋結構神經導管和加芯結構神經導管。 -
By making some assumptions, collision frequency were presented. then the the flocculation kinetics model was established through population balance equation. comparison of experimental data and modeling results indicate that there are the same trend between the two. so the model can predict floes number and size during flocculation of yellow river ' s loess particles without using empirical parameters. the tem and sem were used to obsever floes in the study of floe structure. the flocculation was divided as flocculi, floc and floe aggregate. the floes structure model was established by assumption that particles position in floe accords with tetrahedron. the fractal dimension of model and experimental floes was found to be coincidentso the model can reflect the structure of flocs formed in flocculation of yellow river ' s loess particles by macromolecule flocculant at a certain extent
最後，本文還對絮凝動力學和絮體結構進行了研究，在前人研究的基礎上，針對高分子絮凝黃河泥沙，對絮凝過程作了一些符合試驗條件的假設，建立了顆粒碰撞頻率表達式，應用了顆粒數量平衡方程，從而建立了絮凝過程的動力學生長模型，模型計算結果與試驗數據對比表明，二者趨勢一致，在沒有使用經驗參數的情況下基本上能夠描述黃河泥沙絮凝過程中絮體數量和尺寸分佈的變化過程；對絮體結構的研究中，應用掃描電子顯微鏡和透射電子顯微鏡對絮體進行了觀察，將絮體分為絮粒、絮團和絮網三個不同的生長階段，通過假設顆粒結合位置符西安建築科技大學博士學位論文合正四面體，建立了絮體結構模型，計算得到的模型絮體分形維數基本與試驗中的實際絮體相符，在一定程度上能夠反映高分子絮凝黃河泥沙生成的絮體結構。 -
The difference of reactive mechanisminduced the difference of their structure. v _ 2o _ 5 product prepared by melting - cooling showed more notable undefined structure. after heat - treating under300, particle size becomes smaller, and aggregate to globate grain, showesbetter electrochemical performance at low charge - discharge rate
熔融淬冷法合成的樣品其無定型結構更明顯，前驅體經過300熱處理后，材料的粒徑變細，團聚成球狀的顆粒，球狀特徵更顯著，在低倍率下具有較好的電化學性能。 -
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。 -
Study on granular structure in laterite vn soil has already been reported in different land use pattern but it is little about soil fertility in karst environment. the better the soil structure, the higher the content of water - stable soil aggregate so there is an osculation correlation between aggregate and structure of soil
不同利用模式下紅壤團粒結構的特徵研究己有報道，但關于巖溶環境中土壤變化的研究則很少。土壤團聚體與土壤的結構密切相關，團聚體含量高，則說明土壤結構好。 -
2. the structure of purple soil is meliorated by sabaigrass. when contrast to bare land treatment and natural wild grassland treatment we knew that sabaigrass treatment and grass tree solid plating treatment reduced soil bulk density, enhanced soil capillary porosity, non - capillary porosity and porosity ratio, decreased soil sand grain content, enhanced soil clay grain and silt grain content so as to reduced the dispersal degree of soil, improved the aggregate capacity of soil, increased the amount of soil aggregate structure, meliorated the water permeability of soil, accelerated the form of good soil structure
龍須草能改善紫色土的土壤結構龍須草純種植被和林草立體種植植被能不同程度地降低土壤容重，減少土壤砂粒含量，增加土壤的毛管孔隙度、非毛管孔隙度和孔隙比，以及增加粉粒含量，從而降低土壤分散度，提高土壤團聚性，增加土壤團粒結構數量，改善土壤的透水性，促進良好土壤結構的形成，最終提高土壤的蓄水保肥性能，增強土壤的抗蝕性和抗沖性。 -
In the thesis, we aim to design a new kind of single - layered photoconductor with high performance, to study the relationship between aggregate state structure and photoconductivity, and to enrich organic semiconductive theory system
本論文旨在開發新一類高性能的有機單層光電導體，探索其凝聚態結構與光電導性能之間的關系，豐富有機半導體理論體系。 -
The analysis of ir spectrum and melt flow index showed that the composite had a micro - crosslinking structure, and the analysis of dsc discovered there was - spherulite in the aggregate structure of the composite of pp
紅外光譜分析和熔體質量流動速率的測定表明，復合材料體系產生了微交聯； dsc分析發現， pp材料的聚集態結構中含有球晶。 -
The compatibility and harmony among workability, mechanical grade and durability are optimized, with the ground of adjusting composition and dosage of fd - 1 ; after analyzing anti - freezing damage mechanism, it is concluded that temperature is main factor, which affects structure and property of concrete. after two processes of temperature - elevation of hydration heat and temperature - descent of cold - environment, there is original damage in concrete and its existence leads to temperature fields, as results in temperature damage on transition phase > aggregate and cement mortar of concrete
通過對負溫混凝土早期防凍分析研究認為，環境溫度對混凝土的結構形成及其性能的影響十分突出，水泥水化溫升和環境散熱降溫兩個過程導致混凝土結構內部產生不均勻溫度場，對過渡相、水泥砂漿以及骨料都能產生不同程度的溫度損傷，產生內部溫差應力裂紋，初始損傷也是不可避免的。 -
In this paper, we study two correlated riskmodel. we give the relation between these models through made comparisons. we generalize common poisson process in correlated aggregate claims model ofwang and yuen ( 2005 ) and consider compound poisson - geometric process. weexamine basic properties and upper bounds for the ruin probability of compoundpoisson - geometric risk model with thinning - dependence structure. we also inves - tigate the impact of the thing - dependence structure on the ruin probability
在王過京和kamc . yuen （ 2005 ）等研究的基礎上，本文將其相關模型中的普通poisson分佈推廣為具有許多優良性質的復合poisson - geometric分佈，考察稀疏相依結構下的復合poisson - geometric風險模型的基本性質及破產概率的上界，並對此類相依結構對破產概率的影響進行分析。 -
Lastly, the land disposition model was set up at dahe town, hebei province, including town development direction decision, town land scale decision, town land structure optimum. taking use of fuzzy aggregate principle, choosing ground load - bearing capacity, quality of taken up land, groundwater level, economic land use, infrastructure building cost, radiation capability, transport, life environment, town form as evaluation element, the town development direction decision model at dahe town were set up
運用模糊集合變換原理，選擇了地基承載力、土地農業生產力、地下水位、節約用地、基礎設施建設成本、對周邊的輻射、現有基礎設施、對外交通便利程度、城鎮生活環境、城鎮形態等10個評價因子，建立了小城鎮用地空間擴展決策模型，研究表明大河鎮鎮區用地未來的空間擴展主方向應該是東面和東北面。 -
The hydration theory and the structure forming of hplc are analyzed through xrd, sem, edxa, and the analysis of pore structure, micro hardness. the model of the interface structure between lightweight aggregate and harden cement paste is divided into 4steps, which are penetrating, hydrating and hardening, diffusing of moisture and ion, forming of optimal interface structure, and the ideal structure model of lightweight aggregate is built
採用xrd 、 sem 、 edxa 、孔結構分析與顯微硬度技術分析了高性能輕集料混凝土的水化硬化機理及結構形成過程，把輕集料與水泥石之間界面結構形成過程分為滲透、水化硬化、水分遷移與離子擴散、界面結構優化四個階段，提出了輕集料與水泥石之間的界面結構模型和高性能輕集料的理想結構模型。 -
Determination of the dry density of lightweight aggregate concrete with open structure
敞形結構輕集料混凝土的干密度測定 -
Through systematically analyzing the composition and structure of concrete from three levels of macroscopic, microcosmic and ultra - microcosmic, the author of this paper found that the mechanical properties and durability of concrete depended on mainly its composition and structure. the interface, which is one of three composition of concrete ( hardened cement paste, aggregate and interface ), is the most weak zone in concrete
作者通過對混凝土材料的組成和結構進行宏觀、微觀和細觀三個層次的系統分析發現，混凝土材料的力學性能和耐久性主要取決于其微觀的組織構成；在組成混凝土材料的三相（硬化水泥漿體、集料和硬化水泥漿體-集料界面過渡區）中，界面過渡區是其中最薄弱的一環。 -
With increase of artificial forest age, the content of soil organic matter decreased sharply. and soil physical, chemical and biological properties of forest became worsen. from soil physical properties analysis, soil silt, clay, physical clay, aggregate degree and structure coefficient in topsoil increased with increase of artificial forest age and soil sand deceased
在土壤物理性質方面，隨著人工雲杉林齡的增加，土壤表層粉粒、粘粒、物理性粘粒、團聚度和結構系數降低，砂粒含量增高，土壤飽和持水量、毛管持水量及總孔隙和毛管孔隙在人工雲杉演替過程中表現出「 u 」型變化。 -
Random aggregate structure of mesoscopic concrete and finite element mesh
混凝土細觀隨機骨料結構與有限元網格剖分 -
A new type of structure of the solid - stale displacement reactions which named spiral - mtergrowth - aggregate structure was discovered in the mo2c - si diffusion couple and was considered as the result of spinodal - decomposition continuous phase - transformation
昆明理工大學博士學位論文2002 . 5摘要6 .初步發現了一種新的固態置換反應形貌結構:螺旋共生束集型結構。 -
The aggregate density of rod - aggregate structure is also calculated on the basis of a common presumption
在線性假設條件下，利用此判據進行的理論分析與實驗結果吻合。 -
At first, ploygon aggregate structure of concrete is randomly generated in two - dimensional plane with monte carlo method on the meso - level. then, the growth process of a crack of concrete 3 - point bending beam specimen is analyzed by fem, according to the criterion of maximum circumferential tensile stress. and the path of crack to spread in mortar, aggregate and interfaces of them is gained by the ultimate fracture criteria in construction standard that the width of crack should not be more than 0. 2mm
首先，在細觀層次上，根據蒙特卡羅隨機抽樣原理，在二維平面上建立了混凝土多邊形隨機骨料結構模型，然後採用有限元計算方法，根據最大周向正應力準則，對三點彎曲梁構件進行了開裂過程的模擬，並以建築規范中構件裂縫小於0 . 2mm的要求為最終破壞標準，得出了裂紋在基質、骨料及界面的擴展路徑。 -
A new interface - perturbation model of solid - state displacement reactions ternary system is suggested and the interface - stability criterion is derived in the form of chemical potential if the chemical potential of rate - control - element at frontier of tiny perturbative zone goes up less than 20. 7 %, linear interface will grow up stablly and form layered structure ; if it goes up more than 20. 7 %, linear interface is not stable and will form aggregate structure
通過建立界面擾動模型，推導了三元固態置換反應系界面穩定性的化學勢梯度判據。結果表明：如果擾動微區前沿速率控制元素的化學勢梯度升高小於20 . 7 ，平面界面穩定長大，將形成層狀結構；若大於20 . 7 ，平面界面不穩定長大，將形成束集型結構。
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