滴值 的英文怎麼說
中文拼音 [dīzhí]-
Numerical analysis of liquid drop breakup in airflow
液滴在氣流中破碎的數值分析The slope of titration curve is at a minimum.
滴定曲線的斜率處于最低值。Standard test method for bromine index of aromatic hydrocarbons by electrometric titration
用電勢滴定法測定芳烴溴值的標準試驗方法Bromine number of petroleum distillates and commercial aliphatic olefins by electrometric titration, test method for
用電勢滴定法測定石油餾分和商用脂肪族烯烴溴值的方法Standard test method for bromine numbers of petroleum distillates and commercial aliphatic olefins by electrometric titration
電化學滴定法測量石油餾分及商用脂族烯烴的溴值標準試驗方法The influence of the cloud droplet spectrum character and the spectrum growth and change is considered, which does not use a cut - off value for conversion from cloud water into rain water process. in the continuous coalescence equation, the particles fall velocity difference is not moved out from the integral, but is integrated in the equation as the function of diameter d to avoid the error of using particles average fall velocity. in the new scheme, generation rate of graupel due to the collection of snow by graupel and the collection of cloud ice by graupel are included
雲中凝結核ccn的數濃度採用超幾何函數表示;雲水向雨水的自動轉換過程採用grabowski ( 1999 )的公式,考慮了雲滴譜的特徵和發展變化對該過程的影響,而不是採用原方案給定閾值的方法描述該過程;對連續碰並方程不再將粒子落速差作為常量提出積分號外,而是直接作為粒子直徑函數在積分號內求解,這樣處理可以迴避使用粒子群的平均落速帶來的誤差;增加了霰和雪、霰和冰晶的碰並微物理過程。Using the 1ap 3 - d hailstorm numerical model, we analyze influence of variation on rainfall amount, hail fallout amount, dynamical process of cloud, microphysical process, mechanism of hail suppression with seeding, and seeding outcome. besides, we use those study outcomes and bring forward some advice about using and improving model. we simulate a hailstorm occurred in nanjing county and analyze influence of raindrop, ice crystal, graupel size distribution on outcome of model
本文利用中國科學院大氣物理研究所的三維冰雹雲催化數值模式,通過對冰雹雲的模擬和對譜參數的數值試驗結果,分析了冰雹雲中粒子譜形的變化,對雲和降水過程的影響,其中包括雨滴譜、冰晶譜、霰譜的形狀參數對自然雲的發展過程、降雨降雹、雲中微物理過程、霰以及冰雹的形成機制的影響。The results show that it has no effect on cloud development and cloud structure, when form factors of raindrop, ice crystal, graupel size distribution ( r, i, g ) vary respectively, r variation has a bigger effect on rainfall amount and hail fallout amount, a, variation has a smaller effect on rainfall amount and hail fallout amount
並利用這些研究結果,對雲模式的使用和改進提出建議。對1988年5月3日發生在南京的冰雹雲個例分別進行了雨滴譜影響的數值試驗、冰晶譜影響的數值試驗、霰譜影響的數值試驗以及雨滴、冰晶、霰譜影響的數值試驗。Numerical simulation of hydrodynamics of drop formation by a level set method
水平集方法數值模擬單液滴的生成過程( 2 ) the reaction factors optimized by orthogonal tests are : the emulsion polymerization temperature is 60, the reaction time is 3 hours, the amount of emulsifier is 8wt %, the hydrophile lipophile balance ( hlb ) value of emulsifier is 15, the stirring speed is 4000r / min, the dropping speed is 1. 1g / min
用正交實驗確定的最佳聚合反應工藝參數為:水解溫度60 ,水解聚合時間3h ,乳化劑用量8wt ,復合乳化劑hlb值為15 ;攪拌速度為4000r min ,滴加速度為1 . 1g min 。Numerical investigation of kerosene - droplet ' s instable combustion in oxidizer - rich gas
煤油液滴在富氧燃氣中不穩定燃燒的數值研究The predicted value of the model theory coincided basically with the experimental result of the waste gas methyl benzene of low concentration in the trickling biofilter
模型的理論預測值與生物膜滴濾塔凈化低濃度甲苯廢氣的實驗結果基本吻合。An empirical solution of characteristic values of wetted solum under surface drip irrigation
地表滴灌土壤濕潤體特徵值的經驗解Numerical simulation of drop deformation in stokes flow
流動中液滴變形的數值模擬The effects of the method repeatability, sample mass, standard titrate solution and enviroment temperature on the uncertainty of pta acid value determined with titrimetry were assessed and discussed
摘要對滴定法測定精對苯二甲酸酸值的過程中的方法重復性、樣品質量、標準滴定溶液、環境溫度等方面對不確定度影響進行了評定討論。The initial ph of solutions of poorly ionized acids depends largely upon the degree of ionization and the titration curves very markedly.
其電離酸溶液開始的pH值在很大程度上取決于電離度,其滴定曲線也非常清晰。Analysis of experimental data indicates that there exist several following problems during the whole operation : first, the emission is serious and the density of hc and co smoke is very high at on and off period. second, there is oil dripping from the dripping vitta as a result of the fault of ignition system and combustion structure. the last, there might be accidents of disabled ignition resulted from the improper operation at the beginning
通過對樣機的試驗分析和研究表明,汽車空氣燃油加熱器在整個工作過程中,其排放存在以下三個問題:一、開機和關機兩個階段的排放問題嚴重,廢氣中hc和co的濃度值及煙度測量值都很高;二、因點火系統和燃燒結構的缺陷而導致開機后一段時間內有油滴從滴油管滴落;三、在點火過程中,會出現因操作不當而點火失效的現象。The organization cuts into slices and examines by the in situ pcr, drip protease k 20 ( xl with loomg / ml to digest respectively in pretreatment, increase with normal position positive cell account for total ratio of cell, according to the positive standard cells > 75 %, confirm the lightest digestion time, studying the influence and relationship of different fixation time with protease digesting each other, detecting the mn genotype of the organize slices at the same time
石蠟切片進行原位pcr檢,預處理分別滴加loom歲血的蛋白酶k20閃消化,以原位擴增顯色后陽性細胞占總細胞的比值> 75 %為標準,確定最適消化時間『 , ,研究不同固定時間與蛋白酶消化的相互影響和關系,同時檢測石蠟切片的mn基因型。Primary culture of rat preadipocyte were prepared from the epididymal, inguinal and perirenal the fat pads of male normal, healthy, 15 - 20 days sprague - dawley rats. the preadipocyte grew better under the condition of 37, 95 % humidity, 5 % co2, ph 7. 0 - 7. 2, centrifuged at 1000r / min, m199medium, and 10 % fetal bo vine serum, seeded at a density of 4 l04, 5 l04, / cm2. oil red o staining was the special method to distinguish adipocyte from other cells, gimsa and he could determine the stage of the adiopcyte differentiation through the number of lipid drop, size and the position of the nucleolus of the staining fat cell
經過多次實驗,確定本實驗室大鼠前體脂肪細胞的最佳培養條件是:溫度為37 ,濕度為95 , co _ 2濃度為5 , ph值為7 . 0 7 . 2 ,離心力為1000r / min ,培養基為m _ ( 199 )培養基,胎牛血清濃度為10 ,合適細胞接種密度為4 10 ~ 4 、 5 10 ~ 4個/ cm ~ 2 ,染色結果表明:油紅o染色是鑒定脂肪細胞的特異方法, gimsa和he染色可根據不同區域染色程度、著色差別判斷細胞核的位置及脂滴大小、多少,觀察大鼠前體脂肪細胞分化過程中的形態變化,進而確定脂肪細胞的分化階段。As to the simulation, three - dimensional n - s equations and two - phase flow model, in which the liquid toluene spray as discrete particles was considered, were employed to describe the turbulent combustion processes in the combustion chamber. the mass and energy transfer between the two phases were calculated by the droplet evaporation model, and the arrehnius model was used to obtain the gas chemical reaction rate. the details of 3d flow field, the distributions of temperature and compounds were obtained by solving the equations
數值模擬方面,應用三維湍流n - s方程以及顆粒軌道模型描述了激光器燃燒室內部的噴霧兩相燃燒流動過程,兩相之間的質量、能量交換由液滴蒸發模型計算,氣相化學反應速率由arrhnius公式計算,通過耦合求解氣液兩相模型方程,模擬了燃燒室三維流場,得到了燃燒室內的溫度和組分濃度分佈。分享友人