chemical precipitation 中文意思是什麼

chemical precipitation 解釋
化沉
  • chemical : adj 化學的，化學作用的；應用化學的，用化學方法獲得的。n 〈常 pl 〉化學製品；藥品。 fine chemicals...
  • precipitation : n. 1. 猛然摔下，落下。2. 猛沖；急躁，輕率，魯莽。3. 【化學】沉澱（作用）；降雨（量）；（雨、雪等的）降落。
  1. 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

    深入探討了沉澱劑的種類、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、鐵含量等性能的表徵。
  2. The dependence of oxygen precipitation and induced - defects in heavily as - doped silicon on heat treatment process was studied by annealing and ig process, chemical etching, scanning electron micrograph ( sem ) and transmission electron microscopy ( tem ). a developed ig technique was suggested and the mechanism of the influence of as on oxygen precipitation formation in heavily as - doped silicon was discussed

    本文通過化學腐蝕、光學顯微鏡、掃描電鏡（ sem ） 、透射電境（ tem ）等分析技術，對重摻砷硅單晶在單步退火工藝和內吸雜退火工藝中氧沉澱及誘生缺陷的形態，形核與熱處理溫度、時間的關系等進行了研究。
  3. Biosorption is a process that utilizes inexpensive active / dead biomass to sequester heavy metals and is particularly useful for the removal of contaminants from industrial effluents. compared with conventional methods such as ion exchange and precipitation with lime, the biosorption process offers the advantages of low operating cost, minimization of the volume of chemical and biological sludge to be disposed of, high efficiency in detoxifying very dilute effluents

    生物吸附技術是環境領域近年來迅速發展起來的處理工業污染廢水的新技術，它以各種生物（菌類或藻類）吸附廢水中的重金屬離子，具有吸附容量大，選擇性強，效率高，消耗少，並能有效的處理含低濃度重金屬離子廢水等優點。
  4. The paper discusses dynamical conditions of the supercritical ore - forming fluid system based on study of regional geological background and analyses of physiochemical conditions of ore - forming process and puts forth the ore - forming mechanism : upper mantle uplift - mingling of meteoric water and magmatic hydrothermal fluid separated from acidic magma under tensile or transitional tensile environment - water / rock reaction - transportation - chemical coupling ore precipitation

    在分析超臨界成礦流體系統形成的區域地質背景和研究成礦物理化學條件的基礎上，探討了超臨界成礦流體系統形成的動力學條件，提出該系統的成礦機理：與燕山晚期酸性火山侵入巖漿有關的金銅礦床是在上地慢隆起、張性或向張性過渡背景下形成的，酸性巖漿經熔體流體分離作用形成的巖漿熱液與大氣降水混合，經水巖作用等復雜的輸運和化學反應耦合過程的動力學產物。
  5. The effects of various additives elements and doping methods on foam nickel electrode ' s performance were studied using constant current charge - discharge test. we compared two doping methods : mechanical mixing doping and chemical co - precipitation doping

    利用恆流充放電實驗等電化學測試方法研究了不同摻雜元素及摻雜方式對泡沫鎳電極的影響作用，對機械混合摻雜和化學共沉積摻雜進行了比較。
  6. This conclusion can also be applied in other synthesis methods such as chemical co - precipitation, aerosol synthesis, cryochemical method and hydrothermal synthesis

    這一關鍵對稀土摻雜鋇鐵氧體的其他制備方法，如化學共沉澱法、氣溶膠法、低溫化學法和水熱法等也同樣適用。
  7. Ammonia - nitrogen removal from landfill leachate by chemical precipitation

    化學沉澱法去除垃圾滲濾液中氨氮的試驗研究
  8. Magnetic liquid made in chemical co - precipitation method

    採用膠溶法制備磁性液體
  9. Preparation of hydroxyapatite powder for electrophoretic deposition by chemical precipitation method

    用於電泳沉積塗層的羥基磷灰石粉體沉澱法制備
  10. Wastewater treatment plants - chemical treatment - treatment of wastewater by precipitation flocculation

    廢水處理廠.化學處理.通過沉澱作用絮凝作用處理廢水
  11. Wastewater treatment plants - part 13 : chemical treatment - treatment of wastewater by precipitation flocculation

    廢水處理廠.第13部分:化學處理.通過沉澱絮凝作用處理廢水
  12. Methods of chemical analysis of tungsten - the beryllium as carrier precipitation agent - molybdenum blue photometric method for the determination of phosphorus content

    鎢化學分析方法鈹為載帶沉澱劑-鉬藍光度法測定磷量
  13. L shuchen ( condensd matter physics ) directed by prof. huang shihua preparation and room temperature emission of nanocrystalline zno, colloidal zno solutions and rare earth doped nanocrystalline zno are presented in the present paper, including the near infrared and upconversion luminescence. the main contents and the important results are as following : nanocrystals zno are prepared by chemical precipitation

    呂樹臣（凝聚態物理專業）指導教師:黃世華研究員本論文主要研究納米晶zno粉體、膠體及納米晶zno : re材料的制備和室溫發射現象，包括近紅外發射和上轉換發射現象。
  14. In this paper, six methods of ammonia - nitrogen wastewater physic - chemical denitrication treatment were infroduced, such as blow - removal, steam - abstraction, crystallization, chemical precipitation, chlorination and ion exchange. their mechanisms and engineering application were analyzed and studied respectively. several problems to be cared for in development and implemention of the wastewater treatment techniques were pointed out

    介紹了吹脫法、氣提法、結晶法、化學沉澱法、氯化法、離子交換法6種常用的氨氮廢水物化法脫氮處理技術和工程應用情況，並指出了在開發和實施氨氮廢水脫氮處理技術（工程）時需要注意的問題。
  15. The methods for chemical analysis of lead and zinc bulk concentrates - the determination of lead and zinc content - the na 2edta titrmetric method after precipitation separation

    混合鉛鋅精礦化學分析方法.鉛量與鋅量的測定.沉澱分離naedta滴定法
  16. Chemical analysis of zinc ores concentrates. accurate determination of zinc by complexometric titrimetry after complete precipitation of interfering elements

    鋅礦石精礦的化學分析.雜質完全沉澱後用絡合滴定法進行鋅的精確測定
  17. In this paper, the preparing technological parameters, formation mechanism and structures of ( lithium ) vanadium oxides ( nanocrystalline vo2, amorphous v2o5, layered li1 + xv3o8 and inverse spinel linivo4 ) are systematically studied and discussed, and some properties of the products are measured as cathode materials for lithium ion batteries. the main results are as follows : ( 1 ) nanocrystalline vo2 has been successfully synthesized by a solution chemical reaction method in normal temperature and pressure. the procedure involves v2o5 reacts with koh to form k3vo3 in water and then k3vo3 is reduced with kbh4 around ph = 4 forming vo2 precipitation in aqueous

    本文從實驗與理論分析相結合的角度對（鋰）釩氧化物（納米vo _ 2 、非晶態v _ 2o _ 5 、層狀li _ （ 1 + x ） v _ 3o _ 8及反尖晶石型linivo _ 4 ）制備過程中工藝參數、結構和形成機理等方面進行了系統深入的研究，對（鋰）釩氧化物電性能進行了初步測試，取得的主要結果如下： （ 1 ）成功的在常溫常壓下通過溶液化學反應直接制得具有納米結構的vo _ 2粉。
  18. The crude cellulases from liquid fermentation of b - 6 and ass. 3711 were isolated and purified by ( nh4 ) so4 precipitation, sephadex g - 100 and deae - sepharose cl 6b column chromatography. the cmcase components were purified and some of their physical and chemical properties were studied

    本文將液體發酵的酶液經硫酸銨分級沉澱、柱層析后得電泳純cmcase組分，並對as3 . 3711和b - 6來源的cmcase酶解動力學和理化性質作了比較研究。
  19. The synthesis process of single - wall carbon nanotubes ( swnts ) by catalytically chemical vapor deposition ( ccvd ) was investigated and the product was characterized with transmission electron microscopy ( tem ), electron diffraction ( ed ), electron dispersive spectra ( eds ) and raman scattering spectra etc. pyrolysis of methane over solid catalysts prepared with impregnation, ion - adsorption precipitation, and sol - gel technique can all lead to the growth of swnts

    本文研究了單壁納米碳管的化學氣相沉積法（ cvd ）制備工藝，並運用透射電子顯微鏡（ tem ） 、 x - ray能譜（ eds ）與喇曼（ raman ）光譜等分析手段，對產物及催化劑進行了表徵。採用浸漬法、吸附沉澱法與溶膠凝膠法等制備了催化劑，併合成了單壁納米碳管。
  20. Study on phosphorus removal from waste water by chemical precipitation

    化學法處理含磷廢水的試驗研究
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