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precipitant adj.1.很快落下的;陡斜地落下的;倒落的。2.急躁的...

precipitate

Studies showed that process and condition control had critical effect on the preparation of yig phase , and the proper conditions specialized as follows : using ammonia - ammonium nitrate ( nh3 - nh4no3 ) as precipitant , ph scope from 10 to 10 . 5 , using dissolving salt as law materials , dropping their mixed solution into precipitant , precipitation rate at 0 . 8ml / min 研究表明,共沉淀的過程和條件控制對yig的合成具有重要影響。實驗得出共沉淀的合適條件為:以nh _ 3 - nh _ 4no _ 3為緩沖溶液,控制ph范圍為10 . 0 ? 10 . 5 ,采用可溶性鹽為原料配制溶液,滴加到沉淀劑中的共沉淀方式,共沉淀速度為0 . 8ml min左右。

In this chapter , i have reviewed most of all perspectives on which previous works about the main issue in detailed , for few works concerned it have been published . the previous works can be divided into 5 categories : how mnes or fies to make the decision about total quantity of investment and financing funds and the structure of those funds from every channel ; the capital cost , capital structure , cooperate value of mnes ; how fluctuation of , or the institutes of exchange rate effect financing activity of mnes ; the govern structure , control power distribution between all precipitants in a fie ; lec research on the subject 第一章文獻綜述:因為國內尚少這類研究,故比較全面的綜述國內外了現有成果中關于一國(地區)內外商投資融資的總量、構成及變動的研究;跨國公司內部的資本成本和資本結構(融資結構)及公司價值的研究;匯率波動對跨國公司的財務、融資行為的影響;外資企業的治理結構、所有權優勢及控制權分布;第三世界國家及我國對跨國公司融資的研究。

Fe3o4 nano - particles , which can be dispersed in nano scale , were prepared by means of chemical co - precipitation method . such influencing factors as the type of precipitant , the feeding mode , the surfactants , the reaction temperature , the curing temperature were surveyed . some properties such as crystal structure , particle size , magnetic properties and iron content were characterized 深入探討了沉淀劑的種類、加入方式、表面活性劑、反應溫度、熟化溫度等各種因素對產物的粒徑及磁性能的影響,對fe _ 3o _ 4納米粒子進行了晶體結構、粒徑、磁性能、鐵含量等性能的表征。

Zno nano - particles was made from precursor zn ( ac ) 2 . 2h2o through the method of sol - gel . the parameters for achieving the optimum technological conditions in making zno nano - particles were obtained by carefully observing the precursor concentration , amount of solvent and precipitants , the temperature on each stages and the behavior of reactors 在制備過程中,研究了主鹽濃度、溶劑用量、沉淀劑用量、反應各階段的工藝溫度,以及反應器等因素對實驗結果的影響,得出了制備zno納米微粒的最佳工藝參數。

Proceed from the present situation of nanometer tio2 powder industry in our country , confront more problems in preparation of nanometer tio2 . on the base of analyzing advantages and disadvantages of existing every methods , neutralization precipitation method is adopted , using self - prepare tioso4 solution as raw material , soda as precipitant to precipitate titanous hydroxide precipitation , then obtained anatase nanometer titanium dioxide after heat treatment 從我國發展納米tio _ 2粉體產業的現狀出發,針對納米tio _ 2制備中現存的問題,我們在綜合分析對比了現有各種方法優缺點的基礎上,采用中和沉淀法,以自制的tioso _ 4為原料,碳酸鈉作沉淀劑沉淀出ti ( oh ) _ 4沉淀,經熱處理得到銳鈦型納米tio _ 2粉體。

With the domestic and foreign advanced oxidizing preconditioning ( it can remove ammonia and nitrogen organic material , humic acid , magnesium and hvm film ) separating technology , it separated solid precipitant from brine so as to obtain purified salt brine 該工藝采用國內外先進的氧化預處理除氨氮有機物、腐植酸、鎂和hvm膜分離技術將反應生成的固體沉淀物從鹵水中分離出來,從而得到純凈的鹽鹵水。

It can be antifogging agent in harbors , dust collection agent of road surface , fire - proofing agent of fabrics , protective agent and fining agent of aluminum and magnesium metallurgy , precipitant for lake pigments , raw materials for de - ink of waste paper and calcium salt 用作港口的消霧劑和路面集塵劑織物防火劑。用作鋁鎂冶金的保護劑精煉劑。生產色淀顏料的沉淀劑。

The relation in process , morphology and properties of material was studied . 1 . in - situ precipitation method was developed to prepare chitosan rod by using chitosan membrane as template and naoh as precipitant 本論文提出了用原位沉積法制備殼聚糖三維醫用材料,并對材料的成型工藝、聚集態結構及其與材料性能之間的關系作了初步的研究。

Take an examination of grinding is a lengthy process , in this process must the volition is sturdy , be precipitant ! forget very hard also so 考研是一個漫長的過程,在這個過程中一定要意志堅定,勇往直前!所以也很難忘記!