surface porosity 中文意思是什麼
surface porosity
解釋
表面多孔性-
As an advanced materials preparation technology, spray - deposition has shown remarkable superiority in producing large - sized alloys and metal matrix composites. however, the spray deposeted preforms usually contain a certain quantity of porosity. besides, the oxide films on the surface of the particles lead to week metallurgic conjunction between the particles. in order to obtain an ideal structure and performance, the porous preforms need further densifying and plastical forming. in this paper, a new technology named wedge pressing was used to densify spray - deposeted 5a06 aluminium alloy, in which the large deformation can be obtained through the sum - up of local deformation and multi - step small deformation. this method can also solved the problems in traditional processing and greatly decreased the producing cost. what ’ s more, the reserch on the wedge pressing desification rules about the large - sized spray deposeted preforms was significant it was vital not only to the further densification of the prefoums but also to the further research on plastical deforming the research was also benefit to the industrialization an the application of the spray deposeted porous materials
坩堝移動式噴射沉積技術作為一種先進的材料制備新技術，在制備大尺寸合金及金屬基復合材料方面具有顯著的優越性。然而噴射沉積坯件特別是大型坯件通常存在一定量的孔隙，顆粒表面存在一定量的氧化膜，顆粒之間未能完全達到良好的冶金結合狀態，因此需要進行后續緻密化和塑性變形才能獲得理想的組織和性能。本文採用一種新型的楔形壓制工藝，即通過局部變形、多道次小變形累積實現大變形的緻密化加工方法，對噴射沉積多孔坯料進行后續緻密化和塑性變形，很好地解決了傳統加工工藝的難題，大大降低了生產成本。 -
The porosity is 80 % ~ 93 %. at the same time pf127 exist at the surface of plla to increase the hydrophile ability
同時pfi27存在plla的表面，使plla的疏水表面變為親水表面。 -
The important meaning in which this direction studied has lain in establishing the connection between the material science of concrete and civil engineering, analyse the strength in terms of material microcosmic or the mesoscopic, have important meaning to understanding, know the essential law of the strength of concrete. this text divides six chapters altogether. chapter one reviewed the pore structure in nowadays domestic and international research current situation, including the concrete examines research, research of the pore structure model and the research current situations of pore structure and strength relation of the pore method, have introduced some most important achievements of structure research of pore ; chapter two narrated much yardstick of the material mesoscopic structure of concrete and principle of examining pore technology of material of concrete, and the commonly used sign parameter in discussedding the pore and material pore of quito of cement and analyse, have explained that the influence factor of mip to the result of study of pore, has pointed out the limitation in mip in the pore structure ; analyse porosity and strength relation development course of model emphatically, and has carried on comparative analysis to the existing model, has pointed out the weak point of the original model ; on the basis of " ing integrate synthetically ", propose concrete pore structure compound body model and pore physical model of systemlex body ; chapter five carried on the corresponding test data to compares to the model parameter appearing in model of chapter four with and analyses, have received k value of the characteristic of strength of matrices of reflecting according to the method to return to analysis, and calculate the influence produced on the strength of concrete in revision that can probed into the content of cement, elastic mould and surface energy, exactness of the inspection model ; chapter six is the conclusion, according to studying the survey this text to some research conclusions of the pore structure and making corresponding prospect to the structure development of pore
第一章回顧了孔結構在當今國內外的研究現狀，包括混凝土測孔方法的研究、孔結構模型的研究及孔結構與強度關系的研究現狀，介紹了孔結構研究方面的一些最重要的成果；第二章敘述了混凝土材料細觀結構的多尺度性及混凝土材料測孔技術的原理，並討論了水泥基多孔材料孔隙分析中常用的表徵參數，也說明了壓汞法測孔對研究結果的影響因素，指出了壓汞法在孔結構研究中的局限性；第三章是著重分析了孔隙率與強度關系模型的發展歷程，並對已有的模型進行了比較分析，指出了原有模型的不足之處；第四章在「綜合集成」的基礎上，提出了混凝土孔結構復合體模型和孔系統的物理模型，並模擬了該模型下由各單體並聯形成的復合體的斷裂過程，最後根據所建模型編制了相應的計算程序，可根據輸入的孔徑分佈與水泥含量等參數，實現混凝土理論強度的計算；第五章對第四章模型中出現的模型參數進行了相應的試驗數據對比分析，根據回歸分析的方法得到了反映基體強度特徵的k值，並從理論上探討了水泥含量、彈性模量和表面能的修正對混凝土強度計算產生的影響，檢驗模型的正確性；第六章是結論與展望，根據研究綜述了本文對孔結構的一些研究結論並對孔結構發展作了相應的展望。 -
And the major results and some new viewpoints were presented as follow : 1 ) sediment content of cn tillage system in runoff process is substantially low compared to st under rainfall with high intensity, showing cn bear the efficient capacity of control soil loss. nevertheless, when soil is saturated, the runoff intensity of both tillage systems is near, implicating cn has the limited function of reducing runoff. 2 ) based on the case analysis of observed all rainfall - runoff generation processes, a ) the initiation time hysteresis of surface runoff generation is notable when rainfall fall upon the unsaturated purple soils, which is attributed to the property of rapid water sorption and much non - capillary porosity
經近幾年的觀測和理論分析，取得了以下結果和創新的認識： 1 ）在降雨強度較大的情況下，保護性耕作制? ?聚土免耕的產沙強度明顯較常規耕作制? ?順坡耕作的小，說明聚土免耕耕作制防治土壤流失是有效的；但當土壤達到飽和后，聚土免耕的徑流強度與常規耕作的差異較小，產沙強度也增大，因此，聚土免耕防治水土流失的能力是有限的。 -
The results indicate : ( 1 ) the photocatalytic activity and hydrophilicity of tio2 film are affected by the factors of thickness, porosity and heat - treated temperature which lead to the changes of the hydroxyl content, adsorbability and surface roughness of the film
熱處理溫度、薄膜厚度、孔隙率等因素對摻銀的tio :薄膜、 tioz一snoz 、 tioz一fezo3復合薄膜光催化和親水性能的影響與對純tio :薄膜的影響相似。 -
The limited hydrothermal karst and mixed zone beneath the anticline axis controls the porosity distribution of ordovician system and it is anticipated that surroundings of the axis of fold formed by compressional reverse orverthrusting during indo - chinese epoch and the coordinated area of morphology of anticline in the screen of buried hill and that of top surface morphology is the best position for development of the reservoir
局限的熱液巖溶和裸露的背斜軸部之下的混合帶對千米橋潛山奧陶系孔隙分佈具有重要控製作用，預期在印支期擠壓逆沖作用形成的背斜軸部，特別是潛山內幕背斜形態與潛山頂面形態相互協調的區域，應是儲層發育最好的部位。 -
Advanced instrument and testing techniques including adopting mercury injection apparatus, specific surface analyses apparatus, porosity - permeability measurement apparatus, isothermal adsorption instrument and drill core flow experiment system, etc., are also adopted. on the basis of study on gas zoning, known cbm show and its component, generating mechanism of low coal rank cbm are discussed. the author pointed out that generated cbm should consist of primary biogenic methane gas in lignite stage, thermogenic methane gas in long - flame coal to gas / fat coal stage, and deuterogenic biogenic methane gas in coal seam imbedded stage
在本區瓦斯分帶、已知煤層氣顯示及其組分研究基礎上，探討了低煤級煤層氣的生成機制，指出生成的煤層氣應包括褐煤階段的原生生物甲烷氣、長焰煤?氣肥煤階段的熱成因甲烷氣和煤層埋藏階段的次生生物甲烷氣三種成因甲烷氣體；進而論述了煤儲層含氣飽和度、臨界解吸壓力、臨儲壓力比、地解壓差等甲烷解吸特徵，實測與理論含氣量、煤層氣資源量與資源豐度等煤儲層含氣性特徵。 -
3. by thermo - activation treating, the crystal water and constitution water of sepiolite were further changed. changes of channels between crystals and porosity made the specific surface area of the products increase from 295. 39 m2 / g to 324. 67m2 / g
3 .經過熱活化處理使海泡石的結晶水和結構水進一步發生變化，晶間管道和孔隙度的改變使產物的比表面積由295 . 39m2 / g提高到324 . 67時/ g 。 -
Electropolymerization methods have some attractive features including the easy adherence of the polymeric films to the surface of conducting electrodes of any shape and size and the ability to control thickness and porosity of the films by adjusting scan rate and time during electropolymerization
用電聚合法制備分子印跡已有報道。通過調節聚合速度和聚合時間可以得到不同疏密程度的電聚合膜，並且電聚合膜可以在任何形狀和大小的導電電極表面上形成。 -
2. by activation - treating sepiolite with acid modifying, the channel between crystals, the porosity and the structure changed distinctly, and the specific surface area increased to 295. 39 m2 / g from 236. 26 m2 / g
對海泡石進行的酸改性活化處理使海泡石晶間管道、孔隙度和結構產生明顯變化，海泡石比表面積由236 . 36m ~ 2 g上升到295 . 39m ~ 2 g 。 -
Centrifugal casting ， compact structure ， free from pinhole porosity and slag ， smooth surface and even wall thickness
高速離心鑄造，組織緻密，無砂眼、夾渣，表面光滑、壁厚均勻。 -
Ceramic grain filters ard made of refined pottery clays added with certain modifiers, and processed of grinding, mixing, shaping and high temperature sintering. they do not contain any substances that harmful to people or environment. they are hard and rough in surface, porous inside the structure, and have the advantages of high mechanical strength, large specific surface area and porosity. when used in water treatment, they behave a activated surface property, a great amount of pollutant entrapment, less water head loss in the filter bed, lower consumption of back - flush water, stable in chemical and gbiologic property, and long service life, ceramic grain filters is a new and efficient filter material to increase the water yield, upgrade the water quality, and save chemicals and energy
陶粒濾料是以精製陶土為主要原料，摻加適量改性劑，經粉碎，混練，成型和高溫煅燒而製成的，不含任何對人體和環境有害的物質.其表面堅硬，粗糙，內部疏鬆，多孔，具有機械強度高，比表面積大，孔隙率大的特性.用於水處理中，具有表面性狀好，截污能力強，過濾水頭損失小，反沖洗耗水量低，化學穩定性和生物學穩定性好，使用壽命長的特點.陶粒濾料是一種能增加水產量，提高出水質量，節省藥劑和能耗的新型高效過濾材料 -
The porous ceramics is a line of ceramic materials with porosity ; the pores are communicated up to the surface of the ceramic body
是一類體內含有大量彼此相通並與材料表面貫通的孔道結構的陶瓷材料，可用於過濾與分離、布氣、催化劑載體、潔凈燃燒、消聲材料、隔膜材料等。 -
Proceed from energy - conserving angle of building, a kind of passive evaporative cooling way is proposed that applies to the wall surface, namely porosity moisture - conditioned material is used on building envelope
摘要從節能角度出發，提出一種應用於建築墻體表面的被動蒸發冷卻方式，即將多孔調濕材料貼附於墻體外表面，這種材料兼具自動吸放濕性能和蒸發冷卻性能。 -
Spray deposited porous aluminum alloy sheets easily have surface and edge crack when they are directly rolled due to the porosity and metallurgical bond
摘要噴射沉積多孔鋁合金板坯由於有孔洞且缺乏良好的冶金結合，直接軋制時易出現板坯表面裂紋及邊裂。 -
Top surface porosity
上表面氣孔鑄孔 -
Industrial cleaning service activities. measurement method for the materials surface porosity
工業清潔服務活動.材料表面孔隙度的測量方法 -
In order to make clear the effects of fe3o4 on composite film structure, the thickness, porosity, average and maximum pore size, pore size distribution of different films are measured. surface morphology is studied by scan electronics microscope ( sem ). the characterizing results of film micro - morphology showed that pore structure of fe3o4 / pvdf composite film were better than those of pvdf host film
為進一步分析fe3o4的原位生成對復合膜結構的影響，測定了pvdf基膜和復合膜的膜厚；採用干濕膜重法測試了膜樣品的孔隙率；採用泡點壓力法流體滲透法相結合，對比測試了膜樣品的最大孔徑、孔徑分佈及平均孔徑；通過掃描電子顯微鏡（ sem ）照片分析，對比研究了pvdf基體膜和fe3o4 / pvdf復合膜的表面形貌。 -
It was showed that forest with good structure could improve the soil noncapillary porosity and water conversation function, and it was implied that forest with rational structure stored rainfall and surface runoff quickly
表明具有良好結構的林分，可有效改善土壤非毛管孔隙度和滯留貯水功能，從而有效地提高對降雨的快速貯存以及蓄洪與涵養水源作用。 -
The effects of temperature and retaining time in mild melt treatment on the bonding strength, surface morphology and porosity of tin coating are studied
摘要研究了軟熔處理溫度與保溫時間對錫鍍層的鍍層結合力、鍍層表面形貌和孔隙率的影響。
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