選學化學 的英文怎麼說

中文拼音 [xuǎnxuéhuàxué]
選學化學 英文
take chemistry
  • 選 : Ⅰ動詞1. （挑選） select; choose; pick 2. （選舉） elect Ⅱ名詞（挑選出來編在一起的作品） selections; anthology
  • 學 : Ⅰ動詞1 （學習） study; learn 2 （模仿） imitate; mimic Ⅱ名詞1 （學問） learning; knowledge 2 （學...
  1. 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。
  2. The lipase b from candida antarctica ( cal - b ) displays high enantioselectivity on a broad range of substrates, making it an accepted biocatalyst for asymmetric organic chemistry

    摘要從南極假絲酵母中提取的脂肪酶b ，具有較高的對應異構體選擇性，廣泛應用在培養基中，作為不對稱有機化學的生物催化劑。
  3. The article is based on nation nature science foundation of china, " biogeochemical cycling of pollutants in complex environments of tidal flats in the yangtze estuary " ( no. 40131020 ). the author chose open tidal flat of dong tang chongming yangtze estuary as research object and set up typical section plane so that under the good condition, the author measured hydrology element, total nitrogen and total phosphor index

    本文依託國家自然科學基金重點項目「長江口濱岸潮灘復雜環境條件下物質循環研究」 （批準號： 40131020 ） ，選擇了長江口崇明東灘敞開型潮灘為研究對象，設置典型斷面，在平靜天氣條件下，實測了水文、地球化學要素，獲得了水位、流向、流速、 tn及tp等指標6000多個實測數據，著重對長江口潮灘水動力過程、 tn和tp的動力輸移過程進行研究。
  4. This paper explained the technology that taking calces of pyrite as theraw materials, using the way of chemical process of mineral, dislodging the detrimental impurities with the measures of dipping lye and dipping acid oxide, wich aimed to get the rate of recovery of valuable metallic elements au 87 %, ag 76 %, cu 82 %

    摘要以黃鐵礦燒渣為原料，通過化學選礦的方法，採用堿浸及氧化酸浸的工藝，除去有害雜質和回收有價金屬元素金、銀、銅，回收率分別為87 % 、 76 % 、 82 % 。
  5. In trpsin tolerance assay. this virus could resist to 1 % trpsis at 37 in an hour. in acid tolerance assay, this virus was resistant to ph3. 0 and ph5. 0 at 37 in 2 hours, and the average infection litre of the virus decreased little. in heat assay, at 50, the virus was processed from 5 minutes to 150 minutes and at each condition the viral virulence reduced to some certain degree. among these conditions, when at 50 in 30 minutes. the average infection litre of this virus decreased over 2 tilre. and when al 50 in an hour, cpe of ihis virus disappeared. when time was set for an hour. but with processed in different temperature as 50 60 70, 80, the virus losl the multiplication capacity complelely. in biological assay, we selected different cell lines to cultivate this virus by laking advantage of possesional cells at that time in our laboratory. then we found that fcwf cell line was the most sensitive to dxmv and mdck was the second. with f81 cell line, after passaged for 12 times continuously with low concentration of fcs. the virus could produce cpe. however, with vero cell line. the virus could not procuce any cpe after many passages. the hemagglutination and lumadsorption reaction test proved that this virus had no any reaction to erythrocyte of pig, fowl and cavy. by neutrolizaion assay, dxmv could be identified as a kind of ccv

    理化學研究表明，該病毒為rna病毒，對氯仿、乙醚敏感；胰酶試驗中，經37 、 1小時處理的病毒，仍然能夠在貓源細胞fcwf細胞上生長，並且毒力基本保持不變；耐酸性試驗中，病毒分別在ph5 . 0和ph3 . 0經37作用2小時，毒力僅下降一個滴度；耐熱性試驗中，該病毒在恆定溫度50 ，設定不同時間，從5分鐘到150分鐘，毒力均有不同程度下降，其中， 50作用30分鐘，病毒平均滴度下降2個單位； 50 ， 60分鐘， cpe消失；恆定時間1小時，設定不同溫度（ 50 - 60 - 70 - 80 ） ，病毒在細胞上完全喪失增殖能力， cpe消失。生物學試驗，利用實驗室現有條件，選擇不同的細胞系對該病毒進行培養，發現該病毒對貓源細胞fcwf最敏感； mdck細胞次之； f81細胞經多次傳代，亦可出現cpe ；而vero細胞則不敏感。血凝試驗表明，該病毒對豬、雞、人及豚鼠的紅細胞均無血凝性。
  6. After running through16, 000 possible designs, the comber picked out a plan for the plant that would produce the most chemicals at the lowest cost

    計算機檢查了16000種可供選擇的設計方案之後，挑選出一個以最低成本生產出最多化學，製品的工廠的設計方案。
  7. Electrochemistry of galena in hight alkaline flotation

    方鉛礦高堿浮選流程的電化學
  8. Study on the technology of collectorless electrochemistry flotation

    無捕收劑電化學浮選技術研究
  9. This paper introduced the status and development of basic research on phytochemistry and natural product chemistry in the fields of searching bioactive components, biosynthesis and molecular regulation of plant secondary metabolism substance, environment influence on the synthesis and accumulation of plant secondary metabolism substance, the relationship of endophyte and plant secondary metabolism substance

    摘要本文從生物活性成分的篩選與分離、植物次生代謝產物生物合成及其分子調控、環境因子對植物次生代謝產物合成和積累的影響、植物體內生菌與植物次生代謝產物的關系等方面介紹了我國資源植物化學與天然產物化學領域基礎研究的現狀與發展。
  10. Only the plants were infested by p. xylostella or being infested by p. xylostellam, the volatiles from chinese cabbage were more attractive to females than those from the common cabbage. ( 5 ) the host foraging behaviour of d. semiclausum was studied in the laboratory. the p. xylostella larvae and their feces, silk, regurgitant, exuviae could elicit host foraging behaviour by d. semiclausum females

    本文首次研究了寄主植物的揮發物在小菜蛾和半閉彎尾姬蜂寄主選擇中的作用，初步明確了小菜峨及半閉彎尾姬蜂對不同寄主植物產卵選擇行為差異的化學基礎，並對半閉彎尾姬蜂的寄主搜索行為及學習行為進行了首次研究。
  11. Thus, in order to investigate the developmental pathways not only involved in the regulation of growth and patterning, but also in the determination of cell lineages and differentiation, we utilized the fluorescent immunohistochemical methods, flow cytometry analysis sorting ( facs ) and molecular methods to investigate the developmental law of mammary gland at the different developmental stages, distribution of the stem cells in mammary gland, the methods of isolation, culture and evaluation for the stem cells, the multipotent abilities in vivo and in vitro, and the efficient cultural system for stem cells enriched in vitro. the results showed below : 1

    我們以小鼠為模型，運用組織化學、免疫熒光組織（細胞）化學、流式細胞儀分選方法（ facs ）以及分子生物學手段，研究了小鼠乳腺的發育規律：小鼠乳腺組織中類乳腺幹細胞：小鼠乳腺細胞的分離、培養以及類乳腺幹細胞的鑒定；小鼠類乳腺幹細胞分化的潛能；小鼠乳腺類腺體體外短期培養富集類乳腺幹細胞體系的優化等。研究結果表明： 1
  12. Firstly, setting up the moral concepts in accord with quality education, mainly including its quality concept, social concept, dialectical concept about student, functional and level concepts and so on. secondly, the author thinks that in order to carry out middle school moral educational activities, scientific moral educational content has to be chosen so that it shows to some degree realistic and foresighted feature to adjust to students " physical and psychological character. thirdly, because the content of moral education can be carried out effectively only by scientific approaches, the author puts forward pursuing the new moral educational approaches : realizing the transfer from single teaching into intercommunicating, from empirical approaches into scientific approaches, and realizing the modernization of its means and the variety of its approaches

    針對以上問題，本文提出了素質教育條件下中學德育改革的基本策略，從五個方面進行了闡述，即要樹立與素質教育相適應的德育觀，主要樹立德育素質觀、德育社會觀、辯證的學生觀、德育功能觀、德育層次觀等；在內容上，本文認為要實施科學的中學德育活動，必須選擇科學的德育內容，使德育內容具有一定的社會現實性和一定的教育超前性，同時要使之適合學生的身心特點；德育內容必須通過科學的德育方法才能得到落實，因此，本文進一步提出了要探索新的德育方法的觀點，認為德育方法要實現從單向灌輸向雙向交流型的轉變，從經驗型向科學型轉變，同時要實現手段的現代化，途徑的多樣化； i 。
  13. Flotation of galena pretreated by electrochemical method

    通電電化學預處理方鉛礦的浮選
  14. Through the approach of investigative questionnaire and ability examination, considering both teachers " teaching practice in senior high school and students " need in analyzing and resolving problem, taking the method of fixing the quality and quantity, we make a demonstration research. at last, we draw a conclusion that the 19 manifestations of chemistry ability can be reduced to three levels : the basal level, called repeating thinking, includes distinguishing and judging the chemical fact and relations of quantity in chemical reaction, comparing and summarizing the chemistry fundamental knowledge ; innovative thinking level includes illogical thinking and logical thinking. illogical thinking mainly contains intuition, association and space imagination of micro - particle

    通過調查問卷、能力測試等途徑，結合教師在中學化學的教學實踐和學生在分析、解決問題的實際需要，採用定性與定量結合的方法，進行實證研究，得出結論：化學學科能力的19種表現形式歸納為3個層次：最基礎的再造性思維能力層次包括對化學事實和化學反應中量的關系的識別和判斷、對化學基礎知識的比較概括；以培養創新能力為核心的創造性思維層次包括化學直覺思維、聯想、對微觀粒子的空間想象為主的非邏輯思維和靈活運用已學的化學知識通過分析、綜合地解決問題為主的邏輯思維；化學實驗能力層次是化學學科能力的最高層次，它以思維能力為基礎，集中體現了化學教學的基本特徵，實驗能力層次包括：選用實驗方法和設計實驗方案，對實驗的評價，研究和處理實驗事實、資料、數據，發現規律，表達實驗及其結果，最終解決問題的能力和發散思維。
  15. Research on flotation electrochemistry for fankou lead zinc mine deep ores

    凡口鉛鋅礦深部礦體礦石浮選電化學研究
  16. Next, the writer introduces briefly the process of formation and development of inquiry teaching and puts forward his own opinions relative to the connotation and features of inquiry chemistry teaching in middle - schools, emphatically pointing out that we should take into consideration some factors such as teaching aims, students " traits, teachers " teaching styles, the present teaching conditions of a school when choosing and applying teaching strategies in inquiry teaching of middle - school chem istry

    接著，筆者簡單介紹了探究教學的形成和發展的歷史過程，提出了對中學化學探究教學的內涵和特徵的認識；最後，筆者從準備策略、實施策略和對學生探究學習的評價策略三個方面，重點探討了探究教學的課堂教學策略。通過研究，文章給出了中學化學探究教學中課堂教學策略選擇和應用的較好範例。
  17. This feature plays a very important role in the field of the bond - selected chemist

    這一點在選鍵化學中有很重要的應用。
  18. Abstract : this paper describs the smelting technology of high toughness nodular cast iron qt400 - 18 in cupola. the choice of raw material, chemical composition and the process of nodularization and inoculation is analyzed also. as a result, the reasonable semlting technology is determined to provide reliable gurantee for producing qualified casting

    文摘:本文闡述了在沖天爐熔煉條件下鑄態高韌性球墨鑄鐵qt400 - 18生產技術工藝，並對原材料選用、化學成份選擇、球化處理工藝、孕育處理工藝進行了分析研究，確定了合理的熔煉工藝，為生產合格材質鑄件提供可靠的保證。
  19. It mainly states the choice of research method and the process of research manipulation. then it also have a careful investigation and complete numerous analysis on the current situations of teachers ' current education, requirement, the understanding and attitude of new curriculum innovation reformation and the development of teachers ' discipline and finally obtains the objective conclusion

    陳述了研究方法的選擇和進行研究的操作過程，對中學化學教師教育現狀、需求從教師基本狀況、專業發展現狀、實際教學現狀、對新課改的理解與態度現狀和教師專業化發展需求現狀等幾方面作了深入細致的調研及數據處理，並做出了客觀的結論。
  20. First, from the viewpoint of dissemination, the thesis analysis the relationship among the study contents, teaching target and medium in classroom teaching, recognize the important position of medium choice in teaching. on the basis of the theory, " the three dimension model of the content of course - target - medium choice ", put forward by professors li kedong, xie youru in beijing normal university, the thesis tries to establish the three dimension theory model in high school chemistry teaching to adapt to the teaching practice

    首先從傳播學的角度，分析學習內容、教學目標、媒體在課堂教學中的關系，認識媒體的選擇在教學中的重要地位。在北京師范大學李克東、謝幼如教授等人提出的「教學內容-目標-媒體選擇三維模型理論」的基礎上，嘗試建立中學化學的三維理論模型，以適應化學學科的教學實際。
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