幾不溶的 的英文怎麼說
中文拼音 [jībùróngde]
幾不溶的
英文
practically-
They are jinfo mountain in nanchuan county ( natural protection section ), wuling mountain in qianjiang county ( national emphases forest demonstration county which forest cover rate is beyond 50 % ) and zhongliang mountain in beibei county ( artificial destruction is very grave ). some main land use patterns i. e. woodland, garden, infield, abandon infield, shrub and grassplot are selected in those three sample sites. four aspects on soil fertility index of karst environment under different land use patterns in these three sample sites, are revealed in this paper, by using the field test, indoor measure and analysis, outdoor experiment and field investigation, and the knowledge and technique of soil, ecology, physics and chemistry etc. they are physical characteristic ( effective soil thickness, organic layer thickness, soil texture, water - stable aggregate and soil water etc. ), chemical fertility ( organism, omni - n, omni - p, omni - k, alkali - nitrogen, available p, available k and rapid available k etc. ), soil animalcule ( bacteria, fungi, actinomyces and their grosses ) and soil - seed - pool ( plant community diversity index ) in karst ecosystem
本研究以重慶市的南川金佛山(自然保護區) 、黔江武陵山(國家重點退耕還林示範縣,森林覆蓋率50以上)和北碚中梁山(遭人為破壞嚴重)典型巖溶區為對象,選擇了幾種重要的利用方式,包括林地、果園、耕地、棄耕地和灌草坡,採用野外巖溶生態調查和室內試驗測量分析相結合的方法,以不同土地利用方式巖溶土壤肥力為重點,對不同土地利用方式土壤肥力特徵進行量化分析,找出巖溶土壤肥力差異的主要方面及其根本原因,論文主要從土壤剖面物理退化指標(有效土層厚度、有機質層厚度、質地、團聚體、水分含量等) ,化學肥力退化指標(有機質、全n 、全p 、全k 、堿解n 、速效p和速效k等) ,樣地土壤微生物指標(細菌、真菌、放線菌數量及總量)以及樣地土壤種子庫植物群落多樣性等4個方面對重慶典型巖溶區的土壤肥力特徵進行了較為詳細的分析研究,為巖溶地區士壤資源的合理利用及結構的調控管理提供依據。Computer drawing of some important technological data in countercurrent extraction operation of immiscible systems
互不溶體系逆流萃取過程中的幾個重要工藝數據的計算機圖解The leaching and transferring of 95zr in different soils and its actions in several aquatic and terraneous ecosystems were studied by using the isotope tracer techniques. this would provide some basic data for illustrating the behavior of 95zr in different agricultural ecosystems and serve as science according for establishing some safety standard and managing pollution. at one time, environmental pollution arising by poisonous pollutes has been global hotspot problem
本文採用同位素示蹤技術研究了~ ( 95 ) zr在不同土壤中的淋溶、遷移和在幾種水生及陸生生態系統中的行為,為探明~ ( 95 ) zr在不同農業生態環境中的行為規律提供基礎資料,對制定有關安全標準和污染治理提供了科學依據。The theoretic cycle capacity of limno2 is 286 mah g - 1, which has attracted a great deal of people to research. aim at the impurity of limno2 which was synthesized by the predecessor and the phase change during the electrochemical process, we try several methods, including wet moist chemical method, liquid state method, solide state method and liquid dipping method. at the same time, we study the synthesis of limnc > 2 in defferent atmosphere, for example air, argon and nitrogen
Limno _ 2具有286mah ? g ~ ( - 1 )的理論容量,這種高容量材料深受廣大研究者的關注,針對前人合成出的還有少量雜相和在電化學循環過程中出現相變四川人學碩l :學位論文的問題,我們嘗試了幾種合成方法:濕化學法、液相法、固相法和溶液浸漬法,並在不同氣氛:空氣、氮氣和氫氣中進行limnoz的合成研究。With the very low water to cement ratio, rpc has ultra - high strength high ductility and low permeability. in this paper, the compressive strength of rpc can reach to a high point with the number approximately 135mpa. as illustrated from the study results, we can approve some fundamental conclusions : there are big effects on rpc with deferent kinds and properties of raw materials and deferent curing conditions ; stress - strain curve shows the process of destroy with rpc samples ; x - ray diffraction analysis indicates that heat treatment at temperatures 90 accelerate the hydration of rpc sharply, therefore, mechanical and microstructural properties of rpc are highly dependent on heat treatment ; it is believed that rpc materials have excellent resistance to chloride permeability ; during the heat treatment, the shrinkage of rpc developed quickly because of chemical reactions ; the rpc with slag mostly has the advantage of rpc without slag about resistance to solutions corrosion
研究結果表明:通過對rpc各組分摻量變化的研究,可以找到rpc的最優配合比;試件成型后的熱養護制度對rpc的性能影響巨大; rpc的抗壓應力?應變曲線可以反映出試件受破壞時微裂紋的擴展情況,剛纖維的摻入可以大幅改善rpc的韌性; rpc在成型后存在較大的收縮,而其中的化學收縮要遠遠大於乾燥收縮; rpc具有很強的抗氯離子滲透性能,漿體的密實度很高;通過x射線衍射實驗,可以發現rpc的膠凝體中ch晶體已經幾乎不存在,膠凝體主要由c - s - h凝膠和未水化水泥顆粒組成;在抗溶液侵蝕的實驗中,摻礦渣rpc的抗溶液侵蝕性能在絕大多數情況下要好於不摻礦渣試件,酸、堿溶液和浙江工業大學碩士學位論文摘要一些鹽溶液都會對rpc的結構產生侵蝕作用,但是機理各有不同。But oa and o2 can just slightly increase the ul intensity of the dna. at the same time we studied when the ul intensity of dna in different concentration induced by oh. found that oh has the same inducement to the ul of dna in different concentration
同時,用? oh對幾種不同濃度的dna溶液進行誘導,發現這幾種dna溶液的超弱發光具有相近的顯著增強系數,這說明dna溶液的濃度變化並不影響? oh對dna本身超弱發光的誘導作用。Under that condition the strain can produce the most concentration of the bioactive compounds. the physical and chemical properties of the actibacterial compounds have been studied, the results showed the bioactive substance has heat stable, acidity and weakly alkali stable. it can be dissolved in acid water, chloroform solvent, can not be dissolved in ethyl acetate, petroleum ether, alkali water. the result of thinlayer chromatography showed the bioactive compounds can give off blue and green fluorescence in the uv light. the paper chromatography demonstrate the bioactive substance may be a new construct compounds
研究表明,該活性物質具有較強的熱穩定性, ph 9的條件下能穩定存在,但ph 12的強堿性條件下活性物質的抗菌活性幾近喪失;活性物質易溶於氯仿、酸性水、不溶於乙酸乙酯、石油醚、堿性水;薄層層析顯示活性物質在紫外光下能發藍綠色熒光等特點;由捷克八溶劑系統紙層析鑒定該抗菌活性物質不屬於四大類抗生素,可能為一新的抗菌活性物質。Abstract : according to characters of different research ways, the research development of thermodynamic models of metallic melts is systematically introduced, such as solution model method, geometrical model method, interaction coefficient method, analytical method and experienced model method
文摘:根據不同研究方法的特點,綜述了溶液模型法、幾何模型法、相互作用系數法、解析計演算法以及經驗模型法等金屬熔體熱力學模型的研究進展,並對這些方法進行了簡要的評述。Experiments with several types of carboxylic acid have been done to inquire into their reactions with potassium permanganate solution so as to find out the changes affected by different density of reactor, temperature of reaction and structure of carboxylic acid
摘要以幾種不同類型的羧酸為例進行羧酸與高錳酸鉀溶液反應的實驗探究,分析了反應物的濃度、反應的溫度及羧酸結構對反應的影響。( 6 ) by the all - scale plant of the pre - ozonation experiment, when the water temperature is high, the dissolved oxygen could easily attain saturation, even over - saturation, then the phenomenon of air block could be caused in the tank, the working period of tank may shorten from 36 hours to less than 15 hours, it would influence the normal operation of water treatment plant, so it was suggested not use pre - ozonation only
( 6 )通過對預臭氧化的生產試驗,水溫較高的情況下,溶解氧容易達到飽和,甚至是過飽和狀態,這樣容易在濾池產生氣阻現象,濾池的工作周期從三十六小時縮短到十幾小時,影響水廠的正常運轉。因此建議不單獨投加預臭氧。In accordance with the technological difficulties encountered in the process of insulation supervision based on the dissolved gases analysis ( dga ), several kinds of model and method are presented to improve the reliability and precision of fault diagnosis of the power transformer. main research content includes : by deeply studying the common transformer faults diagnosing methods, such as three - ratio methods and improved electrical committee agreements, several shortcomings such as uncertainness judgment when the fault reasons, phenomenon and principles come out together while can not consistent to each other etc. for this reason, the old methods can not fully meet the need to engineering practical application. considering fuzzy relationship matrix can fully represents the causality between fault symptoms and fault types, when diagnosing complex equipments with multiple symptoms and fault causes such as power transformer, a synthetic fuzzy diagnosing model is firstly proposed to diagnose transformer ' s insulation faults based on dga in this paper
本文針對應用油中溶解氣體分析方法進行變壓器絕緣監督時所遇到的主要技術難點,提出了提高變壓器故障診斷的準確性、可靠性的幾種模診斷方法,主要研究內容有:通過對判斷變壓器故障常用的三比值法和改良電協研法的深入分析,其診斷準確率較高,但對故障原因、故障現象和故障機理間同時存在不確定性和模糊性的變壓器等電氣設備的故障診斷,難于滿足工程應用的需要;在處理變壓器等結構復雜設備的多癥狀、多原因故障診斷時,模糊關系矩陣可以全面反映這種癥狀與故障類型間的因果關系,進而提出了變壓器故障診斷的模糊綜合診斷模型;同時作者還深入分析了模糊運算元的特性;針對常用的模糊評判結果的模糊集的集化方法的不足性,提出了將模糊綜合診斷與模糊規則推理結合起來進行故障診斷的方法,能達到較好的效果。The polarized continuum model is used to simulate the influence of the solvent environment on the solute molecule. in the first place, the geometry optimization of pna molecule in each solvent is redo by using the polarized continuum model on the base of density functional theory
首先,在密度泛函理論基礎上採用極化連續模型重新優化了pna分子在每種溶劑中的幾何結構,研究了不同溶劑對pna分子的幾何結構的影響。The pretreatment of food samples for determination of organochlorine pesticides residues were described in this article, including several new technology which development during recent years, for example : supercritical fluid extraction, accelerated solvent extraction and solid - phase microextraction, these methods have reduced the time and solvent needed for sample extraction
摘要綜述了近十年來國內外對于食品中有機氯類農藥分析的前處理技術,其中包括了近幾年出現的一些新技術,如:超臨界流體萃取、加速溶劑萃取和固相微萃取等,這些新技術不但縮短了樣品的前處理時間並且減少了有機溶劑的用量。But high insolubility restrict its application, so we need to carry on chemical milling to it, carry on the structure and decorate or degrade its strand partly
但是,幾丁質不溶於水限制了它的應用,往往需要對它進行一些化學修飾或部分降解以增加其溶解性。Primitively, the taylor tape is shaped when the polymer solution conies out from the sprinkler, then the taylor tape is elongated with the spray of instabilities, and the jets form solidified nanofibers gradually
高聚物溶液從噴射孔流出首先要生成幾ylor圓錐,然後r幾ylor圓錐伸長,並伴隨著射流的不穩定運動,接著射流開始向固化纖維轉化。This paper summarizes the research progress in vitrified cryopreservation of several animal tissues and cells, for example, pancreatic islet and oocytes of mouse, ovaries of rat, blastocysts and oocytes of bovine, embryos of pig and human, and the effect of different cryoprotectants, vitrification solutions and cooling procedures on survival rate
本文論述幾種主要組織細胞玻璃化凍存方法的研究及其進展,如小鼠胰島和卵巢、牛胚泡、牛卵母細胞、豬胚胎、人胚胎等,不同冷凍保護劑,玻璃化溶液和冷凍程序對細胞存活率的影響。In the first part, the article summarized the definition and importance about dissolved oxygen ( do ), the general methods of measuring do. the origin, development and excellence of usage in chemical sensor with fiber - optical technology, the characteristic of fiber optical chemical sensor are introduced. those deferent fluorescence indicators have been used in oxygen sensors during more than twenty years and their deferent capability as fluorescence indicators
在第一章中,在研讀文獻的基礎上綜述了溶解氧的定義和在生產生活中的重要意義;溶解氧測定的常規方法;光纖技術的起源、發展及其應用於化學傳感器的優點;光纖化學傳感器的原理特點;探索了不同時期應用於氧傳感器的熒光指示劑的種類和性能;制備氧傳感探頭的幾種方法原理和光纖氧傳感器在醫學、生物、海洋監測等領域中的應用現狀。The optimum condition of sample microwave digestion can be obtained by studying emphatically a new sample digestion method - sample microwave digestion, compared with experimentation, this method not only has the advantages of convenient, quick and safe operation, low pollution to environment, and ably to digest simultaneously over ten samples, but also has the satisfactory accuracy and sensitivity
著重研究一種新的樣品消解方法微波溶樣,得出微波溶樣過程的最佳條件,經實驗對比,此法不僅方便、快捷、操作安全、時環境污染小、可以同時消解十幾個樣品,而且有著滿意的準確度和靈敏度。The viscosity of hpmc solution can be influenced by acid or alkali hardly and the ph value of it can be stable in the range of 3. 0 - 11. 0ei
Hpmc水溶液的粘度幾乎不受酸或堿的影響,而且ph值在3 . 0 11 . 0的范圍內比較穩定。Chapter 4 preparation of tio2 nano - films and its surface structural morphology tio2 nano - films were successfully fabricated by a sol - gel process on glass substrate. the morphology and microstructure of films were investigated via atomic force microscope ( afm ), x - ray diffractometer ( xrd ) and transmission electron microscopy ( tem )
凝膠法制備了tio _ 2納米溶膠,在不同的處理方式下以刮片法制幾種無機納米材料的制備、表徵與應用備了兩種ti仇多孔納米薄膜,並利用afm , tem , xrd等測試方法對膜表面結構及物理化學特性進行了表徵。分享友人