粒徑不等 的英文怎麼說
中文拼音 [lìjìngbùděng]
粒徑不等
英文
unequigranular-
Firstly, simulate flow field of rear smoke channel, plot velocity magnitude and ash concentration distribution in section of entry of heat pipe air preheater, compare with data which were measured in guiyang power station, verify simulation to be reasonable and right. secondly, simulate all kinds of factors which affect flow field ' s uniformity such as length, thickness, location of diffluent board, ash concentration, ash diameter, and so on, find the chiefly factors. thirdly, install guide board in curve channel in rear smoke channel, then simulate its " flow field, plot velocity magnitude and ash concentration distribution
在此基礎上模擬在冬夏兩季不同情況下,不同流速對熱管空氣預熱器壁面溫度的影響;然後對影響整個流場分佈的各種因素:包括分流板長度、厚度、偏離中心流道位置的偏離度、飛灰濃度、飛灰粒徑等因素進行數值模擬;最後提出在分流煙道轉彎處加裝導流板,並模擬加裝導流板后的流場分佈,得到下級空氣預熱器出口、熱管空氣預熱器進口處的斷面速度場分佈、濃度場分佈,以論證加裝導流板能達到流場均勻化的作用。The surface structure of the seeds is cerebelloid, or nearly so in anisodus and hyoscyamus pusillus, and reticulate in all the remaining genera and species. the testa cells fall into two types in terms of their shape and pattern of the cell walls. in one type the testa cells are from polygonal to suborbicular in shape, isometric, with the cell walls being nearly straight, and in the other the testa cells are irregular in shape, often not isometric, with the cell walls being variously sinuate
外種皮細胞形狀和周壁式樣有兩大類,一類為多邊形至近圓形,等徑,周壁近平直,另一類為形狀不規則,常不等徑,周壁為各式波狀:外種皮細胞周壁內側有皺波狀、瘤狀、小顆粒、片狀或小刺等各式附屬物。The nominal diameter has little significance in sediment transportation.
等容粒徑在沉沙輸移中意義不大。The soil - rock foundation was applied in highway of changde - zhangjiajie, and in order to assure soil - rock foundation quality by shocking and compaction test, different virtual height of soil - rock foundation was constructed and it ' s quality was controlled for in - situ test, it was considered as parameter for virtual height, shocking and compaction quantities, shocking and compaction sediment rate and maximum diameter of packing materials
摘要針對常張高速公路採用沖擊壓實技術壓實土石混填路基的問題,選取試驗段進行了不同虛鋪厚度路基的施工工藝及質量控制等試驗研究,提出了虛鋪厚度、沖壓遍數、沖壓沉降率(單級沉降量) 、填料最大粒徑等施工控制參數。This thesis investigated and researched on non - loaded crack, especially those caused by thermal - shrink, and analyzed the thermal - shrink stress of beam, slab and continuous - wall, found that according data of civil and overseas offered thermal - shrink calculating formula without considering effect of factors, such as the cement quantity, using of aruhuesiru, aggregate size and quantity of sand, which made the result data smaller. in addition, there are not enough construct measure in code
本文對非荷載裂縫,特別是溫度?收縮裂縫進行了調查研究,並對兩端或四周約束的梁、板和底部約束的地下連續墻進行了收縮應力分析,發現國內外有關文獻給出的收縮計算公式沒有考慮泵送商品混凝土的水泥用量、外加劑使用、骨料粒徑和砂用量等因素的影響,計算出的混凝土收縮量往往偏小;另外, 《規范》中針對溫度?收縮裂縫的構造措施不足。On the basis of the equivalent circuit diagram the solid - solid and the composite - electrolyte interfaces, contributed their impedance in the relatively high and low frequency regions
第三部分是探討不同粒徑大小氧化釕奈米微粒復合電極在不同電位下之阻抗頻譜的變化,進而由等效電路圖來解釋其涵蓋的物理意義。In this paper, the contrast of original image is enhanced by nonlinear transformation based on the characteristics of grain image ; after comparing several methods of threshold segmentation and analyzing their performance and applicability on grain image, the adaptive threshold segmentation based on gradient image is presented ; the noise of binary image is reduced with morphological filter, the hollow in binary image is filled in and a recognition algorithm is designed to remove agglomerate particle ; on the basis of mathematical morphology two methods are adopted to segment agglomerate grains that are not agglomerated tightly ; the parameters of size and shape, perimeter, area, diameter, complexlity, longest feret diameter, shortest feret diameter etc, are extracted. this technique is applied in measurement of pearl powder ' s particle size
本文根據粒度圖像的特點,採用非線性對比度增強處理改善顆粒顯微圖像的對比度;對多種閾值分割方法進行比較,分析了它們的性能和用於粒度圖像的適用性,在此基礎上提出了一種基於梯度圖像的動態閾值分割方法;對獲取的顆粒二值圖像進行形態濾波和空洞填充,設計了識別演算法去除凝聚體;對重疊不太嚴重的粘結顆粒採用了兩種基於數學形態學的分割演算法;提取了周長、面積、粒徑、復雜度、最長feret徑、最短feret徑等大小和形狀特徵參數,對珍珠粉等粉體粒度進行了測量。This paper conbined with the indoor test and the scene test road, through the synthetical analysis of the factors of influencing densification effect for the densification thickness of filling stone roadbed. the maximum grain size of fill material, densification machinery and densification frequency et al. advanced a control norm of the maximum grain size and piy of compression, established ration evaluating the control standard of densification quality of filling stone roadbed under overload. comparing with result of indoor test and the scene test road, studied on theory of densification in different kinds of stone material and perfected the control system of the densification of filling stone roadbed under overload
結合室內試驗和現場試驗路的實測數據,通過對填石路基的壓實厚度,填料最大粒徑,壓實機械及壓實遍數等影響壓實效果的因素的綜合分析,提出填石路基的最大粒徑和攤鋪厚度的控制指標,建立定量評定超重載交通下填石路基壓實質量的控制標準,並對照室內試驗和現場試驗結果,研究不同石料條件下的壓實理論,補充完善了填石路基壓實控制指標體系。The preparation of gold nanoparticles and the study of their surface plasmon resonance we had preparated gold nanoparticles of different size through two - step approach, one - step approach and seeding growth approach. uv - vis image and tem image indicated that surface plasmon resonance absorbance had a red shift with the argument of the sizeof the gold nanoparticles. 2
金納米粒子的制備及其表面等離子共振吸收特徵我們分別用兩步法、一步法和晶種法三種不同的方法制備了小、中、大三種不同粒徑的金納米顆粒,用紫外可見吸收光譜和透射電子顯微鏡進行表徵。This paper gives a brief introduction of the formation mechanism of sma and the handing property of pavement from the aspects of theory and research. at the same time, this paper also studies the effect of aggregate size on road - related performance in some different grads. except, it also having inspected to use the sbs, the pe and the combination material of sbs and pe to analyze the influence to the function of material road
瀝青瑪蹄脂碎石混合料( sma )以其溫度穩定性好、抗滑性能優良、低噪音、使用耐久等優點在公路建設中越來越受到重視,本文對sma組成特點,強度形成機理與路面使用性能從理論和試驗研究角度進行論述,並針對不同級配的瀝青瑪蹄脂碎石混合料,分析了粗、細集料的粒徑變化對其路用性能的影響,同時也考察了用sbs 、 pe 、 sbs和pe復合改性后的瀝青結合料對混合料的路用性能影響。With some proper conditions, the mixture of rutile and anatase phase powders could be obtained. the sizes of the powders increased in a relatively slowrate when the temperature was below 400, but the size of the powders increased faster when the temperature is higher than 400
在室溫條件下制備了尺寸為9 . 7nm的金紅石相, 9 . 2nm的銳鈦礦相,以及混晶等多種二氧化鈦納米晶粉體,在400溫度下煅燒可獲得不同粒徑的納米晶粉體。The use of the urea fluid bed unit will efficiently solve the problems arisen from the inadequate capacity of the prilling tower, such as the higher temperature of the product urea, higher dust content, smaller mean particle size, and liability to caking in storage, and bring about good economic benefit
摘要應用尿素流化床裝置有效解決了因造粒塔能力不足而造成的成品尿素溫度偏高、粉塵含量較高、平均粒徑偏小、存放易結塊等問題,並且具有良好的經濟效益。The tio2 / sio2 particle was characterized with scanning electron microscope ( sem ), infrared spectroscopy and xps. it could be saw from the photo of sem that the compounding particle was still spherical, and there were some tio2 on the surface of sio2 particle. ti - o - si was formed between tio2 and sio2, and this was confirmed by ft - ir analysis
並運用掃描電鏡、紅外光譜和xps等檢測手段對其進行了表徵和測試,從復合粒子的掃描電鏡照片中可以看出,復合粒子仍為球形,表面包覆一層tio _ 2 ,與載體氧化硅粒子相比,粒徑變化不大;其紅外光譜表明, tio _ 2與載體sio _ 2粒子表面有ti ? o ? si鍵生成,這表明tio _ 2與sio _ 2粒子表面有較強的結合力。It has not only better physics machine function, but also better bio - compatibility, bone - combined character than bio - metal and alloys, bio - ceramics and bio - macromolecule etc. making use of the water heat synthesization method, air current comminution method and classification filtration composite technique has preparated even crystal of ha, average particle size is 280nm
本文研製了無機纖維增強pmma ha人工顱骨復合材料,該復合材料與金屬材料、陶瓷材料和高分子材料相比,不僅具有良好的物理機械性能,而且具有良好的生物相容性和骨結合特性。利用水熱合成法、氣流粉碎法和分級篩分等多種技術制備了粒徑均一的ha晶體,平均粒徑為280nm 。Aminobenzenesulfonic acid super - plasticizer is selected though cement paste test, which be provided with high water - reducing property, low slump loss and good compatibility with cement. according to the request of super high early strength, admixture rf is obtained though tests to compare performances of different accelerators and admixtures. experimental research and analysis are carried out on coarse aggregate ' s grain - size effect and composite aggregate ' s bulk - density to take sensitivity of coarse aggregate into account
通過水泥凈漿試驗比較選擇了減水率高、坍落度損失小、與水泥適應性好的氨基苯磺酸鹽高效減水劑;針對超早強的性能要求,試驗比較了不同早強劑及早強性摻合料的性能表現,研製了早強性能顯著、與高效減水劑和水泥相容性較好的rf摻合料;考慮到修補混凝土對粗集料粒徑的敏感性,對粗集料粒徑效應及混合集料堆積密度進行試驗研究與分析;並對修補混凝土的抗折、抗壓、新老界面粘結強度以及抗凍性等進行了試驗研究。The motion characteristics of the suspended particles were obtained by statistical analysis, including vertical concentration distribution, mean velocity profile, turbulent intensity, velocity correlation, and the probability density distribution of the velocity fluctuations. attempt has also been made to interpret the turbulent characteristics in terms of particle properties and turbulence structure
對不同容重、不同粒徑的顆粒在不同水流條件下的垂線濃度分佈、平均速度和脈動強度分佈、相關函數及脈動速度的概率密度分佈等進行了全面系統的統計分析,得到的中文摘要主要成果如下:2. in this thesis, the mesoporous silica was experimented by using macromolecule microemulsion as template, and template was removed through calcinations and extraction with hot ethanol. the mesoporous materials were synthesized and characterized with tem, x - ray diffraction, nitrogen adsorption / desorption and ft - ir techniques, etc. the results showed that all the samples had larger porediameter than samples " through calcinations under resembled conditions, but the mesopore ordered poorly
首先以剛合成的粒徑均勻分佈的高分子微乳液為模板劑和反應介質,採用萃取和煅燒的方法得到了介孔氧化硅材料,採用ft - ir 、 xrd 、 tem 、 n _ 2吸附脫附曲線等測試手段對經不同處理過的介孔氧化硅材料結構進行了表徵。A " saddle " shape appears in the curve of relationship between smd ( sauter mean diameter ) and charging voltage, the droplets " size distribution fluctuates with the change of charging voltage. the influence of electric field on flow field is apparent. the distribution of velocity and turbulent energy, structure and size of vortex appear different changes with the increase of voltage of charging
索太爾粒徑隨電壓的變化曲線中出現「馬鞍」現象,粒徑的分佈情況隨電壓的升高出現波動性變化;電場對流場的作用明顯,速度與湍能的分佈及渦的結構等流場特性隨電場的改變均有不同規律的變化。The results show that different homogenization methods have no effect on the microstructure except the particle size and morphologies of pbs nanoparticles
結果表明:不同均化手段對產物的結構並不產生影響,但影響產物的粒徑、形貌和分散性等。By the use of discrete phase model, the gas - solid two phase flow under different conditions were simulated. the trajectories of particles were obtained, and the influence of secondary air and particle diameter distribution were investigated. and by the compare of experimental results and numerical simulation results, the reference for the further study of numerical simulation of gas - solid two phase flow in cfb was supplied to some degree
運用顆粒軌道模型對床內不同工況下的離散相顆粒軌跡進行了數值模擬,得出了二次風、床料粒徑分佈等因素對顆粒軌跡的影響情況,並通過模擬結果與實驗現象的對比,為循環流化床內氣固兩相流動的進一步數值模擬研究提供了一定的基礎。分享友人