相伴系數 的英文怎麼說
中文拼音 [xiāngbànxìshǔ]
相伴系數
英文
coefficient of association-
With 24 c or 4 c, the change trends of the content of the salidroside was basically consentaneous in the consecutive cultural eras of the callus. in the callus from the different explants, the influence was maximal to the the activity of pal enzyme and the influence was lowest to the the activity of ca4h enzyme, and the influence to the the activity of tal enzyme was ascertained according to the explant of the callus. so in the same explant with the different temperature or in the different explant with the same temperature, there was no incident between the content of the salidroside and the activity of enzymes pal, ca4h and tal, and we presumed that there may be emphasized particularly on different metabolic pathway of salidroside
（ 2 ） 、愈傷組織的外植體來源、培養溫度條件和不同的繼代培養數都影響著其中紅景天甙的含量和苯丙氨酸解氨酶（ pal ） 、肉桂酸解氨酶（ ca4h ）和酪氨酸解氨酶（ tal ）這3種酶的活性；不管是葉來源還是莖來源，不管是24培養還是4培養的愈傷組織，在連續繼代培養中紅景天甙含量的變化趨勢基本上是一致的；無論是葉來源的愈傷組織還是莖來源的愈傷組織，培養溫度對pal酶的酶活性影響最大，對ca4h酶的酶活性影響最小，對tal酶的酶活性影響視不同的外植體來源而定；在相同外植體來源的愈傷組織中及不同的培養溫度的條件下，或是在不同外植體來源的愈傷組織中及相同溫度的培養條件下，其紅景天甙含量與pal酶、 ca4h酶和tal酶的酶活性之間沒有完全一致的對應伴隨關系。Adopting high resolution nested grid project and proper physical parameter, a mei - yu heavy rain process during eight july 22, 2002 and eight july 23, 2002 and the meso - b - scale systems alongwith it, were simulated by use of psu / ncar meso - scale nonstatic numerical forecast model mm5 in this paper. the simulation result describes successfully the spatial and temporal distribution of this rain process and the developing course of the concomitant meso - ? - scale systems
本文利用psu ncar的中尺度非靜力數值預報模式mm5 ，採用高解析度套網格方案和適當的物理過程，對2002年7月22日08時到23日08時的一次強梅雨暴雨過程和伴隨的中-尺度系統進行了數值模擬，結果很好地描述了本次暴雨降水的時空分佈及相伴隨的中-尺度系統的發生發展過程。The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film
試驗結果表明：所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求；聚四氟乙烯樹脂熱分解溫度超過400 ，但在ptfe中加入無機填料會使復合材料吸水率提高，熔融溫度及分解溫度降低，且伴有氧化分解反應；碳纖維表面含有c = o及c - o - c等極性基團，有利於提高其與其它組分的相容性，提高層間剪切強度；均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系，擬合曲線基本能表示各配方的摩擦系數發展趨勢；配方中不加銅粉或不加石墨，其摩擦系數均較高，說明銅粉和石墨應該配合使用；當銅粉15份、石墨60份時，銅粉30份、石墨30 - 40份時，銅粉60 、石墨15 - 30份時，摩擦系數均具有較低值；純聚四氟乙烯樹脂在空氣冷卻時結晶度最大，磨損量也是三者中最大的；同時，固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的：不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副，在金屬表面均可形成潤滑轉移膜，從而減少金屬摩擦副表面間的直接接觸，大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。Abstract : biological invasions are a continuous feature of a non - equilibrium world, ever more so as a result of accidental and deliberate introductions by mankind. while many of these introductions are apparently harmless, others have significant consequences for organisms native to the invaded range, and entire communities may be affected. here we provide a survey of common models of range expansion, and outline the consequences these models have for patterns in genetic diversity and population structure. we describe how patterns of genetic diversity at a range of markers can be used to infer invasion routes, and to reveal the roles of selection and drift in shaping population genetic patterns that accompany range expansion. we summarise a growing range of population genetic techniques that allow large changes in population size ( bottlenecks and population expansions ) to be inferred over a range of timescales. finally, we illustrate some of the approaches described using data for a suite of invasions by oak gallwasps ( hymenoptera, cynipidae, cynipini ) in europe. we show that over timescales ranging from 500 10000 years, allele frequency data for polymorphic allozymes reveal ( a ) a consistent loss of genetic diversity along invasion routes, confirming the role of glacial refugia as centres of genetic diversity over these timescales, and ( b ) that populations in the invaded range are more subdivided genetically than those in the native range of each species. this spatial variation in population structure may be the result of variation in the patchiness of resources exploited by gallwasps, particularly host oak plants
文摘:生物入侵是不均衡世界的一個永恆話題，尤其是當人類有意或無意地引入物種后.很多引入顯然是無害的，但另外一些則有著嚴重的後果，會給入侵地的生物以至於整個生物群落造成影響.本文總結了分佈區擴張的常見模式，概述了它們對遺傳多樣性和種群結構式樣所造成的影響.描述了如何根據以一批遺傳標記所得到的遺傳多樣性式樣來推斷入侵途徑，來揭示伴隨擴張選擇和漂變在形成種群遺傳樣式中的作用.本文對日益增多的群體遺傳學方法進行了總結，這些技術可以用來在不同的時間尺度上推斷種群規模所發生的巨大變化（瓶頸效應及種群擴張） .最後，我們以歐洲櫟癭蜂（膜翅目，癭蜂科，癭蜂族）一系列入侵的數據為例對一些方法進行了說明.從500 10000年的時間尺度上，多態的等位酶位點上等位基因頻率的數據表明: 1 ）遺傳多樣性沿入侵路線呈不斷下降的趨勢，支持了冰河期避難所作為遺傳多樣性中心的作用; 2 ）入侵地區的種群與該物種原產地的種群相比，遺傳上的分化更為強烈.這種種群結構在空間上的變異可能是被櫟癭蜂開發的資源尤其是櫟樹寄主在斑塊上出現變異的反映Consider : nature, scope and scale of operations and activities key programme areas, budget ceiling, staff numbers, offices facilities projects sites equipment ; boundary of influence policy areas, interaction with other parties including suppliers and contractors, target audiences, service receivers, business partners, local communities ; mainland communities ; overseas communities ; roles and responsibilities ; structure ; relevant policies quality, environmental, social, health and safety policies ; etc
考慮因素：營運與活動的性質范圍及規模主要工作綱領預算限額員工數目辦公室設施計劃地盤設施權責界限政策范圍與其他方包括供應商承辦商目標讀者服務享用者商業伴本地社群中國內地社群海外社群的相互關系角色及責任結構相關政策質素環境社會健康及安全政策等Nature, scope and scale of operations and activities key programme areas, budget ceiling, staff numbers, offices facilities projects sites equipment ; boundary of influence policy areas, interaction with other parties including suppliers and contractors, target audiences, service receivers, business partners, local communities ; mainland communities ; overseas communities ; roles and responsibilities ; structure ; relevant policies quality, environmental, social, health and safety policies ; etc
考慮因素：營運與活動的性質范圍及規模主要工作綱領預算限額員工數目辦公室設施計劃地盤設施權責界限政策范圍與其他方包括供應商承辦商目標讀者服務享用者商業伴本地社群中國內地社群海外社群的相互關系角色及責任結構相關政策質素環境社會健康及安全政策等This research project, based on the existing problems in mathematics curriculum evaluation and the conceptions of mathematics curriculum as the guideline, systematically analyzes the basic characteristics of the developmental evaluation, i. e. multi - dimensional, formative, developmental, understanding and inspiring. drawing on the modern mathematics conceptions, multi - intelligence theory and theories of constructivism, this project systemically illustrated the connotation of the developmental evaluation : the key of evaluation is for application ; the goal is multi - dimensional ; the process is context - dependent ; the outcome is to promote the development. in view of the conceptions of developmental evaluation ( i. e. human - centered whole evaluation ; quality - focused overall evaluation ; participation - stressed autonomous evaluation ; future - faced evaluation ; guiding evaluation and inspiring evaluation ), the components of the developmental evaluation model in the new mathematics curriculum is analyzed in details in this project ( i. e. goal system, subject system and object system ) and the core structure of the developmental evaluation is established ( i. e. evaluation indicator system model )
本課題研究以數學課程評價的現存問題為著手點，以數學課程理念為目標指向，系統分析了數學新課程發展性評價的多元性、形成性、發展性、理解性、激勵性等基本特徵;以現代數學觀、多元智力理論、建構主義理論以及成功智力理論為理論背景，系統闡述了數學新課程發展性評價之意蘊?評價核心聚焦應用，評價目標指向多元，評價過程依存情境，評價結果歸依發展;以數學新課程發展性評價理念，即以人為本的全體性評價、注重素質的全面性評價、注重參與的自主性評價、促進完善的引導性評價、不斷進取的激勵性評價、面向未來的期望性評價為航標，深入剖析了數學新課程發展性評價模式的構成成分，即目標系統、主體系統和客體系統，由此構建發展性評價模式的核心圖式?評價指標體系的模式:以數學新課程發展性評價過程為參照，尋求並創設評價準則的設計技術，評價權重的構造技術，評價信息的收集技術，評價結果的分析與處理技術;以數學新課程評價系統內蘊的一般認識論、發生認識論與發展認識論指導評價方法，詳細探討了檔案袋法、表現性評價、自我評價與同伴評定相結合的方法、蘇格拉底式研討評定和測驗法在評價中的應用。Since 1990s, e - data exchange, e - funds transfer and security certificate has been maturely step by step, especially the popularization of internet and e - commerce. the current business structure and distribution system will be changed and become the potential and active trading carrier in 21 century. e - commerce changes the traditional commodity trading concept and make the traditional taxation collection faced the new challenges
當前，以國際網際網路為媒介進行的商務活動正在全球范圍內興起， 20世紀九十年代以來，伴隨著電子數據交換，電子資金轉帳和安全認證等相關技術的日益成熟，特別是網際網路的普及，電子商務發展日益迅猛，全球電子商務即將改變現有的商業形態及其流通體系，將會成為21世紀最具潛力和活力的貿易載體，改變了傳統的實物貿易觀念，使得傳統的稅收征管面臨著新的挑戰。Although many companies realize that long - term partnership orientation can enhance their benefits and performance, but they don ' t know how to build long - term relationship with channel members
雖然許多企業了解長期導向的關系交換能為企業帶來相當多的利益，且有助於長期績效之提升；但大多數企業卻不知如何去建立此一伴關系長期導向。A novel strip - coil - baffle structure used to enhance heat transfer and support the tube bundle for a tube - shell heat exchanger is proposed. the new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger. the numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted. the computational domain consists of two strip - coil sleeved tubes and two bare tubes oppositely placed at each corner of a square. the velocity and temperature fields in such strip - coil - baffled channel are simulated using fluent software. the effects of the strip - coil - baffles on heat transfer enhancement and flow resistance in relation to the reynolds number are analyzed. the results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40 ? to 55 ? in comparison with a bare tube bundle ; meanwhile, higher flow resistance is also accompanied. it is believe that the strip - coil - baffled heat exchanger should have promising applications in many industry fields
介紹了一種用於強化管殼式換熱器殼側傳熱和支撐管束的螺旋折流片新型結構，該結構是對換熱器管子相間地套上螺旋折流片以產生旋渦流動.研究模型是在正方形布置的4個管子中的2個對角管子套上螺旋折流片后形成的通道，利用fluent軟體對該上述四管通道模型的流場和溫度分佈情況進行了數值模擬;分析了四管通道模型中螺旋折流片對強化傳熱和流動阻力隨雷諾數的變化關系的影響.算例結果顯示該新型結構可比相同尺寸的光管通道中的情形傳熱系數提高約40 ? 55 ? ，同時也將伴隨較高的流動阻力.可以相信螺旋折流片式換熱器將會在許多工業領域有良好的應用前景Abstract : a novel strip - coil - baffle structure used to enhance heat transfer and support the tube bundle for a tube - shell heat exchanger is proposed. the new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger. the numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted. the computational domain consists of two strip - coil sleeved tubes and two bare tubes oppositely placed at each corner of a square. the velocity and temperature fields in such strip - coil - baffled channel are simulated using fluent software. the effects of the strip - coil - baffles on heat transfer enhancement and flow resistance in relation to the reynolds number are analyzed. the results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40 ? to 55 ? in comparison with a bare tube bundle ; meanwhile, higher flow resistance is also accompanied. it is believe that the strip - coil - baffled heat exchanger should have promising applications in many industry fields
文摘:介紹了一種用於強化管殼式換熱器殼側傳熱和支撐管束的螺旋折流片新型結構，該結構是對換熱器管子相間地套上螺旋折流片以產生旋渦流動.研究模型是在正方形布置的4個管子中的2個對角管子套上螺旋折流片后形成的通道，利用fluent軟體對該上述四管通道模型的流場和溫度分佈情況進行了數值模擬;分析了四管通道模型中螺旋折流片對強化傳熱和流動阻力隨雷諾數的變化關系的影響.算例結果顯示該新型結構可比相同尺寸的光管通道中的情形傳熱系數提高約40 ? 55 ? ，同時也將伴隨較高的流動阻力.可以相信螺旋折流片式換熱器將會在許多工業領域有良好的應用前景Combined with positive research and normative analysis, present status of our hotels and questions in them are firstly investigated through analysis on large numbers of data. and then development trends of strategic alliance in hotel enterprises are detailed discussed and motivations of strategic alliance are proposed based on characteristics of hotel enterprises and their inherent requirements. also different models which strategic alliance of china hotels could adopt are given in the light of strategic alliance cases in oversees and domestic hotel enterprises
本論文運用實證分析和規范分析相結合的方法，通過大量的數據分析，對我國飯店業的現狀及存在的問題進行了分析，從飯店企業的特徵及內在要求出發詳細探討了飯店企業戰略聯盟的發展趨勢，分析了戰略聯盟的動機，結合國外和國內飯店企業戰略聯盟的案例，歸納總結了我國飯店企業戰略聯盟可採取的不同模式，給出了戰略聯盟的構建模型，並指出聯盟夥伴的選擇、聯盟談判、聯盟願景的建立、聯盟的系統化管理是聯盟構建過程中的關鍵要素。Thus, putting the problem of peasant ' s income under the background of social transformation, using the quantitative and statistical approach in economics and field investigation approach in demotics, this thesis studies the relation between peasant ' s income diversification and the peasant ' s class differentiation
因此，本文把農民收入問題置於社會轉型的背景之下加以考察，結合經濟學數理統計方法和社會學田野調查方法，來研究農民收入多元化態勢與農民階層分化之間相互伴生、互為因果的互動關系。Secondly it systematically analyzed external and internal e - manufacturing risks to provide a whole set of risk - controlling measures, which include it outsourcing strategy, software - renting strategy with asp, ideas that are conducted by business optimization and supported by information technology, supervision principles, strategic partners retaining, qualification certificating defined by relevant national bureaucracies, fundamental data preparing and so on
其次，較系統地分析了企業信息化的外部風險和內部風險，提出了一套控制風險的措施，其中包括：採用it外包策略，向asp租用軟體策略，以業務優化為主導、信息技術為支撐的觀念，實行項目監理制度，聘請戰略合作夥伴，國家相關部門開展資質認證，組織基礎數據等等。And then some key content in jini is also discussed in detail. at last, a new scheme ( jini - based supply chain partnership management system ) that integrated jini, jdbc and olap ( on - line analytical processing ) is suggested. the design of the system includes system frame, element of development topology of the system and the data platform
本文介紹了供應鏈管理的相關理論，並指出了供應鏈合作夥伴關系管理在供應鏈管理中的重要地位，然後分析了供應鏈合作夥伴關系管理的業務流程，討論了合作夥伴評價體系的層次結構、數學模型和支持系統。The main features of informal communities at junior high school at rural district are : ( 1 ) forming reason, not only space distance, ability attraction, interests, personalities which are found in the early researches, but also economic condition of the families, living environment ( counties and country sides ), original foundation of relationships ; ( 2 ) the qualities students choose when they look for their partners are positive, healthy, and are basically consistent with their parents " expectations ; ( 3 ) contents of activities, not only study, chat, travel and play, interesting actions, but also doing some rural work to help adults ; ( 4 ) nature, most of the communities " behaviors seldom break disciplines and laws and they seldom have leaders who have obvious position and influence ; ( 5 ) we can consider the students informal communities which are based on interests and hobbies as advantageous condition in the management of class, it ' s difficult to manage the students communities which are drafted apart from class
2 、貧困地區農村初中學生非正式群體的主要特點是： （ 1 ）形成原因上，除以往研究中發現的空間距離、能力吸引、興趣、性格以外，還包括家庭經濟條件、生活環境（鄉鎮和山村） 、原來關系基礎等因素； （ 2 ）學生選擇夥伴時所趨同的品質都是積極上進的、健康的，並基本與家長的期望相一致； （ 3 ）在活動內容方面，除一起學習、閑聊、遊玩、興趣活動以外，還有幫助大人干農活； （ 4 ）大多數學生群體較少有違紀或違法行為，群體中具備明顯地位和影響力的自然頭領較少； （ 5 ）以興趣愛好為基礎結成的學生非正式群體在班級管理中可作為有利條件，與班級關系疏遠的學生非正式群體是班級管理中的難題。Finally, these departments ca n ' t establish the information system and logistic system which can quick respond to the customers relate to cost. quality deliverable our country economy system is changing, it is changing from socialism planning economy to market economy. it is very important for us to research the supply chain management, we can learn from the foreign country " s enterprise practice. our goal of use of scm is controlling inventory, improving supply quality and strengthening the competitive capability
我國航空企業特別是材料采購在傳統計劃體制與運作模式下，多數是自成一個封閉系統，不重視對供應鏈的管理；製造商、供應商和經銷商缺乏長期合作的戰略夥伴關系，相互之間缺乏以信任和共同獲利為基礎的價值鏈，沒有形成滿足顧客在成本、質量、交貨時間等方面的要求而反映敏捷的物流和信息流。我國正在由計劃經濟體制向市場經濟體制轉變，研究國外近來發展迅速的供應鏈管理理論與方法並應用於gj航空公司的實際，對控制庫存、提高服務水平、增強市場競爭能力，有重要的現實意義。In the training organized in beijing, shanghai and guangzhou, business manager and senior engineers of vdi department give an in - depth and professional explanation, dozens of business managers from the partners participate in the training. schneider electric and channel partners have conducted a detail communications and discussions on the cabling system and the market cooperation, a great number of partners arrange related person to attend the following cabling training courses to earn more technical knowledge
在此次三地舉行的培訓上，來自施耐德電氣vdi事業部的負責人和高級工程師提供了深入、專業的講解，數十位合作夥伴業務負責人參加了培訓。施耐德電氣和渠道夥伴對綜合布線系統和市場合作進行了充分的溝通和探討，相當一部分合作夥伴還紛紛安排相關人員參加了隨后的技術專題課程，為向用戶提供梅蘭日蘭infra +這一優質的綜合布線產品以及工程系統服務，建立了很好的業務基礎。分享友人