極性共價 的英文怎麼說
中文拼音 [jíxìnggòngjià]
極性共價
英文
polar covalence-
In this thesis, in order to reducing the amount of the pt catalyst, improving the electrocatalytic activity of the pt catalysts and utilization ratio of pt, the electrochemical codeposition method by cyclic voltammetry ( cv ) was used to prepare a series pt / moox / glassy carbon ( gc ) composite electrodes with high dispersibility. the composite electrode, pt / moox / gc, was characterized to study its composition and its electro chemical behavior by cv. using the xrd and sem techniques, the size and the dispersion degree of the catalyst particles were studied in presence or absence of moox in the catalyst
為了降低主催化劑pt的用量、提高pt的活性和利用率，本論文利用循環伏安法共沉積制備高分散的pt moo _ x催化劑顆粒，利用循環伏安電化學表徵、 xrd和sem技術研究了引入moo _ x后的催化劑即pt moo _ x顆粒的粒子大小、分散狀態；利用icp - aes定量分析pt moo _ x催化劑顆粒的組成含量；並藉助于電化學方法分別評價了pt moo _ x gc電極催化劑的對甲醇的電催化活性和穩定性、氧還原電催化活性。Though there are a certain level of counteractive impacts to the market power from the price - differentiation agreement and dynamics of demand, the influence of market power cannot be eliminated ; 3 ) in the electricity market, the market power size is greatly influenced by the supply - demand relationship, extent of concentration, and market collusion
雖然差價合約和負荷需求彈性對市場力有一定的抑制作用，但並不能消除市場力的存在。 （ 3 ）電力市場的供需關系、市場的集中度以及市場共謀的有效性極大地影響著市場力的大小；發電企業的成本和發電容量的限制在某種程度上也影響著市場力的實施效果。Enterprise value : maximize customers ' advertising investment, maximize our brand ' s advantages, emphasize benefit share to encourage employees, do best to contribute society
企業價值觀：為客戶尋求廣告投資價值的極大值；向市場提供最高性價比的品牌產品；共建共享，充分展示員工的自身價值；貢獻社會，最大限度地體現企業價值。Remove staff work - positivity, assist them to design their business career, steering and prompting them bring into play their potential and creating ability, with them achieved their self - value, reach the organization target together
調動員工的積極性，幫助他們進行職業生涯設計，引導、激勵員工發揮自己的潛力和創造力，使他們實現自我價值的同時，共同達到組織目標。In this dissertation, the author analyzed plant biodiversity in yunmengshan forest region with field survey on plant species and forest vegetation, the results show that : the vascular plants in yunmengshan forest region include 548 species ( variation ) which belong to 319 genera, 98 families, the flora geographical composition are complex, the dominant characteristics of flora are temperate zone plants which account for 55 percent, herbaceous species occupy 75 percent exclusively. evaluating the threatened hierarchy of plants in yunmengshan forest region, the results show that the number of critically endangered species is 7, endangered species isll, vulnerable species is 53, lower risk species is79, safty species 376
本文在對雲蒙山林區的植物物種、植被進行調查的基礎上，進行植物多樣性分析，研究結果如下：雲蒙山林區共有維管束植物98科319屬548種和變種，地理成分復雜，包括中國全部屬的15個分佈區類型，區系組成以溫帶成分為主，佔55 ；生活型譜中，草本植物種類占絕對優勢，比例為75 . 3 ；通過瀕危評價，得出雲蒙山林區植物極危種7種，瀕危種11種，漸危種53種，敏感種79種，安全種376種。The problems of insulation resistance between the electrodes is too lower when the filament is on and the ability of bearing high voltage is too lower are rather outstanding and general during designing and manufacturing the tube with pyrolytic graphite grids in xuguang corporation. the technological experiments and the academic discussing which this article did to aim at these problems possess values of using for reference by other type tubes
其中，熱態時極間絕緣低和耐高壓能力差的問題是旭光公司在研製和生產熱解石墨柵極發射管中遇到的比較突出的共性問題，課題針對這些問題所做的工藝試驗和理論探討對其它管型具有借鑒和參考價值。For instance, a new property of network traffic ( self - similarity ) has been observed in diverse networking contexts. some old protocols, policies and evaluate methods which are based on previous markov network model are not suitable for this self - similar traffic. and when tcp data share bandwidth with udp data that is popular for multimedia applications over the internet, it also causes fairness problem
多媒體業務流會給整個網路的性能帶來極大的影響，如：多媒體業務導致網路流自相似現象加重，使網路的原有的markov模型基礎上的協議、策略，及其評價方法不夠準確，導致丟失率上升，網路性能下降；多媒體業務中使用的大量udp包與普通數據流tcp包共存時對公平性的影響等等。A full mathematical model of optimal flow pattern design withengineering constraints was put forward, based on modern optimal control theory. an optimal flow pattern design was presented for optimizing meridional channel of axial flow turbine. according to integral optimization of turbine stages, a full physical model and mathematical expression were put forward for proposition of optimal flow pattern, including all performance parameters in turbine stages. this problem was further recast into a typical form control to maximize specific performance index such as work or efficiency of stage with given initial state, fixed terminal condition and constraints for part of state terminal variables. the program was also worked out according penalty function method and conjugate gradient method. the optimal distribution of c1ur1 ( r1 ) was obtained according to constraint conditions and maximized objective function
把近代最優控制論方法引入軸流透平葉片的設計，在優化的軸流透平子午通道內，建立包括透平級內所有性能參量的最優流型命題的完整的物理模型及其數學表達式，並歸化為一個在給定初始狀態、自變量終端固定、部分狀態變量終端受有約束的條件下，使級的某一性能指標（如級的功率）達到最優的最優控制問題，應用「代價函數法」及「共軛梯度法」編制計算程序，計算得到符合給定約束條件、並使目標函數取極值的最優環量分佈，結果是令人滿意的。The carbonate reservoir rock includes many influence factors that it is through many phases structure bursts and the ancient karst to act on jointly the formation and with which the rock karst gives first place. the complicated oil field of karst cave and crack are controlled by limestone reservoir and the crevices - cave system, which have many characteristics such as vivid and great in style, irregular distribution, the limestone cave in crack and unhomogeneity of rock etc. these kinds of reservoir belong to a world difficult and extreme problem on valuation and cognition
它是經多期構造破裂與古風化巖溶共同作用形成的、以灰巖巖溶為主控因素、以儲集體控藏和縫洞系統控藏為主的溶洞?裂縫型復雜油氣藏，表現為其不規則形態和不均勻分佈、裂縫溶洞發育不均一、儲層非均質性極強等特點，認識和評價該類儲層屬世界性難題。Both ultimate bearing capacity and shakedown loads of non - homogeneous foundations are computed. based on numerical results computed for different load modes, limit loads and shakedown loads of non - homogeneous foundation and offshore platform foundations are compared. the ultimate loads and shakedown loads for different combinations of horizontal component and vertical component and moment can con
在豎向載荷與水平載荷共同作用下，研究了地基土體的強度特性與土層分佈特徵對地基承載力的彤響，對地基的極限載荷與安定戳荷進行了比較分析，為全面、綜合地評價非均質地基的穩定性提供了有益的參考。This paper set up a geological model of sliding mass by geological condition analysis and selection cross section of character representation of guishan sliding mass. the stability of sliding mass is calculated and evaluation under bench stoping and deck excavation in terms of six excavation schemes with limit equilibrium method. there dimensional finite element method is applied to study the stability of sliding mass to the deck excavation schemes by means of computer simulation and calculation
通過對滑坡體工程地質條件的分析，選取滑坡體的代表性剖面建立了滑坡體的地質模型，選取極限平衡方法就滑坡體在臺階式開挖和整體開挖兩種不同開挖方式共6種具體開挖方案條件下，對滑坡體的穩定性進行了定量計算評價，提出臺階式開挖和整體開挖兩種不同開挖方式的的各開挖方案的比較結果，然後就確定的具體開挖方案開展三維有限元數值計算，並進行評價，以達到相互校核、相互驗證的目的，最後，確定出工程應用的開挖施工方案。S ince its establishment, under the correct leadership of the people ' s government of hebei as well as active support and common concern of all walks of life, center for international economic and cultural exchange, hebei has organized and held a series of international and regional economic and cul - tural exchange activities, made outstanding contributions to the promotion of economic construction and reform and opening of hebei province and won the high appraisal of the provincial people ' s government
河北省國際經濟文化交流中心成立以來，在河北省人民政府的正確領導下，在社會各界的積極支持和共同關心下，組織和舉辦了一系列的國際性、區域性經濟、文化交流活動，為促進我省的經濟建設和改革開放做出了突出貢獻，得到省人民政府的高度評價。The hybrid claw - pole alternators have magnetic fields contributed by permanent magnet as well as excitation coil, and the advantages are high efficiency, have good low - speed characteristics, excitation adjustable and high flux densities. for the reason of complex claw - pole construction and 3 - d magnetic field distributions, there is lack of the research on the alternators
混合勵磁爪極發電機是由永磁體和勵磁線圈共同產生電機磁場的一種發電機，與傳統的爪極發電機相比有高效、低速性能好和集線圈勵磁的電壓調節性能與高磁通密度的優點，具有很好的研究前景和使用價值。The severe atmospheric environment of low atmospheric pressure at high altitude with pollution and icing has an important effect on the external insulation performance of transmission lines and threatens the reliability of a power system. therefore, a systematic study on flashover performance of several types of insulators at the severe atmospheric environment has both important academic meaning and engineering value
覆冰、低氣壓（高海拔）和污穢等多因素共存的復雜環境對電力系統的安全運行造成極大的威脅，對復雜環境中絕緣子閃絡特性的研究具有非常重要的工程應用價值和學術意義。This text includes the preface and totally contain the following six parts : the preface, it introduces the original reasons about the evaluating of forest resources value ; the first part, discussing the basic theories of the evaluation of forest asset value and its checking, and it primarily includes the both side contentsione is a basic theories of asset evaluation, which introduce the three basic methods : namenly marketing method, income method and cost method ; the other is 《 the no. 41 of international accountant standard - agriculture 》 that its related rules point out the direction for the checking of forest asset value ; the second part, primarily discussing the four kinds of forest asset : namely the characteristics and evaluation methods of woodland asset, wood asset forest enviroment and forest landscape asset ; the third part, talking about specialities of accountant report forms and accountant checking of all categories of subjects of forest asset ; the four part, taking the example of shifang forest ry station of forest asset valuation circumstance, and after the analysis make an important conclusion that the forest and twood managements have the tremendous positive exterior - economic effection. in addition, the thesis take the example of forest resource evaluating and accounting about the station ; the fifth part, finally talking about doing the forest resources value evaluating and accounting well must do resolution problems and carry out the foreground of it
本文包括前言共有六個部分，概述如下：前言，談研究森林資產價值評估及核算的緣起；第一部分，論述森林資產價值評估及核算的理論基礎，主要包括兩方面內容：一是資產評估的基本理論，重點談了資產評估的三種最基本的方法，即市場法、收益法和成本法；二是《國際會計準則第41號? ?農業》有關規定為森林資產價值核算指明了方向;第二部分，主要論述四種森林資產，即林地資產、林木資產、森林環境、森林景觀資產的特點和評估方法;第三部分，談森林資產各科目的會計核算及會計報表的特殊性;第四部分，以什郁林場森林資產的評估情況為例，進行分析並得出結論?對森林、林木的經營管理，具有極大的外部經濟正效應，另外列舉了該場森林資產會計核算部分實例;第五部分，最後談到做好森林資產價值評估及核算還須解決的問題和其發展前景。An equation to calculate ultimate shear - resistant capacity of src column and steel beam joint is discussed, with consideration of the actions of concrete, steel web and horizontal hoop. the effects of axial press and steel wing under loads are also discussed
探討考慮混凝土、型鋼腹板、箍筋共同貢獻的勁性柱?鋼梁節點極限抗剪承載力計算公式，並就軸壓力、翼緣在節點受力過程中的作用進行了分析與評價。分享友人