粒子大小 的英文怎麼說
中文拼音 [lìzidàxiǎo]
粒子大小
英文
grain size-
In this thesis, in order to reducing the amount of the pt catalyst, improving the electrocatalytic activity of the pt catalysts and utilization ratio of pt, the electrochemical codeposition method by cyclic voltammetry ( cv ) was used to prepare a series pt / moox / glassy carbon ( gc ) composite electrodes with high dispersibility. the composite electrode, pt / moox / gc, was characterized to study its composition and its electro chemical behavior by cv. using the xrd and sem techniques, the size and the dispersion degree of the catalyst particles were studied in presence or absence of moox in the catalyst
為了降低主催化劑pt的用量、提高pt的活性和利用率,本論文利用循環伏安法共沉積制備高分散的pt moo _ x催化劑顆粒,利用循環伏安電化學表徵、 xrd和sem技術研究了引入moo _ x后的催化劑即pt moo _ x顆粒的粒子大小、分散狀態;利用icp - aes定量分析pt moo _ x催化劑顆粒的組成含量;並藉助于電化學方法分別評價了pt moo _ x gc電極催化劑的對甲醇的電催化活性和穩定性、氧還原電催化活性。Particulate matter includes particles from molecular size to greater than 10mm in diameter.
微粒物質包括從分子大小到直徑大於10微米的粒子。Radiative scattering depends on the particle size in relation to the wavelength of light scattered.
輻射散射取決于與散射光波長有關的粒子大小。Sol - gel method was used for preparing the nano - tio2 photocatalytic film on general glas slid and ito conductive glass. the spectrum property, surface image, crystlal type, particle size, thickness and other properties of this film were measured by uv - vis, afm, xrd and other apparatus
採用溶膠-凝膠法在普通玻璃載波片和ito導電玻璃上制備出負載型納米tio _ 2薄膜,並用uv - vis , afm , xrd等對納米tio _ 2薄膜的光譜特性、表面形貌、晶型及粒子大小、薄膜厚度等進行了表徵。The nucleation and growth of calcium oxalate ( caoxa ) crystals in liposome solutions was investigated using laser light scattering spectroscopy and transmission electron microscopy ( tem )
採用激光散射儀和透射掃描電子顯微鏡分別研究了卵黃卵磷脂( pc )囊泡的粒徑和囊泡中生長的草酸鈣晶體的粒徑大小。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。Aggregates of molecules do not grow into crystals of a size large enough to settle or be filtered out.
分子聚集體並不生長成為晶體,其粒子大小不足以使其沉降或被過濾出。Most commonly measured optical quantities in the atmosphere are heavily dominated by portion of the size range.
大氣中普通測量的大多數光學量都明顯地由粒子大小范圍的某一段來決定。Wizard zahoransky kg offers offers to particle analysis, laboratory equipment and laboratory equipment for grain size measurement
Wizard zahoransky kg公司為您提供準確的、可靠的實驗設備,粒子分析、質點分析,粒子大小測量器。The tube diameter had light relation with deposition rate under same volume flow amount, while the relation of deposition rate with aerosol particles size was relatively complicated
在相同體積流量下,沈積率與管徑關系不大;而沈積率與氣溶膠粒子大小之間的關系比較復雜。From the analysis of the microstructure of the modified epf30r, it indicated that the crystallinity, crystalline size, and the dimension of the filler particles of. the ppbc3b were all inferior to the epf30r ' s, which also verified the effect of the nucleator - dicpk
對改性epf30r的微觀結構分析結果表明ppbc3b的結晶度、晶體大小、所用填充粒子大小都要低於epf30r及相關材料,同時證實了成核劑dicpk的成核作用。The deposition rate of aerosol particles in capillary tube was measured with submicrometer monodisperse polystyrene spheres solid aerosol particles and pulse sample inserting technique ; and studies were made on the relationship between the flow velocity, the tube diameter, the tube length and aerosol particles size
摘要採用亞微米單分散聚苯乙烯球形硬氣溶膠粒子和脈沖進樣技術,測定了氣溶膠粒子在管道中的沈積率,研究了沈積率與流體速度、管道長度、管道直徑和氣溶膠粒子大小之間的關系。In 2005, 61 physical and chemical parameters were measured and analysed in sediments. these included particle size, electrochemical potential as highly anoxic sediment with negative potential is related to organic pollution, chemical oxygen demand which indicates organic pollutants, total sulphide inorganic constituents, source of the unpleasant - smelling gas hydrogen sulphide, 15 metals and metalloids aluminium, arsenic, barium, boron, cadmium, chromium, copper, iron, lead, manganese, mercury, nickel, silver, vanadium and zinc, and trace toxic organics pahs and pcbs - 16 compounds and 18 congeners respectively
2005年,沉積物監測包括分析61種物理及化學參數,其中有粒子大小電化學勢有機污染促使沉積物缺氧,而讓電化學勢呈負數值化學需氧量顯示有機污染程度總硫化物無機物,是造成難聞氣體硫化氫的主因15種金屬及準金屬鋁砷鋇硼鎘鉻銅鐵鉛錳汞鎳銀釩及鋅和痕量毒性有機物多環芳烴及多氯聯苯分別為16種復合物及18種同質物。The nanoparticle titanium dioxide was prepared with tnb as raw material by the sol - gel process, the effects of the alcohol salt concentration the kind of solvent the water volume hydro1yze temperature. the dried ways of the wet gel and the calcined temperature of the dry gel on the specific surface area. particle size
本文以鈦酸丁酯為前驅體,利用溶膠?凝膠法制備了納米級的tio _ 2粉體材料,通過正交實驗研究了醇鹽的濃度、溶劑的種類、水含量、水解溫度、乾燥條件和煅燒溫度等工藝條件對納米粒子的比表面積、粒徑大小及分佈、晶相組成等性能的影響。Sio _ 2 nano particle has anti - rubs function is because sio _ 2 nano particle is very small and has the massive hydroxy, can forms the adsorption thin film within rub surface. so protected the solid surface improve the grease resistance to wear
納米sio _ 2的抗疲勞機理是粒子很小且具有大量的羥基,可以在摩擦副間形成吸附薄膜,因而保護了固體表面,提高了潤滑脂的耐磨性。Tem was used to consecutively investigate the size and appearance of dibasic lead phosphite in the reaction process. it found that nanocrystal grain of lead oxide phosphite hydrate had favorite direction in the mlps method, many nanocrystal grain in near area would aggregate and assembled as nanowire, the diameter of the nanowire was about a crystal grain size and the length of nanowire could reach hundreds of nanometers, then they would gather to needle or bar like particles
利用tem對二鹽基亞磷酸鉛在反應過程中粒子的大小、形貌進行跟蹤觀察,並記錄下三個時間下的微粒照片,發現用微液相合成法制備的二鹽基亞磷酸鉛晶粒在生長團聚時存在取向規律,同一區域的晶粒會長成一條納米線,直徑有一個晶粒的大小,長度可以達到幾百nm 。Higher bath temperature and more deposition time, faster deposition rate, faster growth rate of crystallizing nucleus, which causes bigger crystalline granularity ; ph value and bath temperature are also key factors affecting the size of crystalline granulatrity
鍍液溫度越高、時間越長,沉積速度越快,晶核成長的速度就越快,沉積晶粒的粒度也越大。鍍液ph值和sn ~ ( 2 + )離子濃度也是影響晶粒粒度大小的關鍵因素。Nano - scale coo was obtained by the decomposition of coco3, which synthesized by the liquid reaction. the grain - size of coco3 and coo were measured by laser diffraction grain - size analysis. the microstructure of the samples was observed using transmission electron microscope ( tem )
採用激光粒度測試儀測量了試驗制備的碳酸鉆和氧化亞鉆的粒度大小,並利用透射電子顯微鏡( tem )觀察了納米碳酸鉆和納米氧化亞鉆的形貌。Some special surface treatment methods were adopted to improve the interface interaction between the polymer and magnetic particles in order to increase the encapsulation efficiency. the ultrasonic technique, some organic solvents and several functional steric stabilizers were applied to improve the quality of final magnetic particles. ps / iron oxides magnetic composite microspheres with the size 80 - 210nm were prepared via improved emulsion polymerization
三種方法可以制備具有不同粒徑和磁性能的磁性fe _ 3o _ 4納米粒子,其中,共沉澱法制備的磁性微粒粒徑大小穩定,比較容易控制在10nm左右,且所得磁性微粒的磁響應性強,具有超順磁性,利於制備高性能的磁性復合微球。In order to meet the requirement of nano - hexaferrites, hydrothermal method and sol - gel self - propagating high - temperature synthesis method were applied. by studying the effects of different precursors, ph value, temperature and time, the optimum conditions were determined, the structure of crystals was studied by x - diffract aat the same time the morphologic and the diameter of crystals were studied by tem
使用x一射線衍射鑒別晶體結構,通過透射電子顯微鏡觀察粒子的形貌與大小, x一射線衍射鑒別晶體是鋇鐵氧體,透射電子顯微鏡觀察粒子的形態與大小, ,發現粒子分散性較好,結晶性良好,形貌為六角型,通過統計計算粒子粒徑,粒子大小處于納米級,平均粒徑為70nm 。分享友人