角外繞流 的英文怎麼說
中文拼音 [jiǎowàiràoliú]
角外繞流
英文
flow around corner-
Many paper is dealing with the brushless dc motor. some of them neglect the effect of the inductance, some of them take the inductance into accoutant, but do not analyze the effect of the commuting angle
在國內外文獻中，在直流無刷電動機運行性能的分析上，有的忽略了電感的作用，有的雖然考慮了繞組電感，但沒有分析切換角的作用。Based on the consulting and analyzing of many correlation literatures, the visit of the correlation institutions and experts and the survey of many fields, the dissertation is instructed by the theories of economics, international trade, and industrial organization from the point of macroscopic view. meanwhile, the paper makes a systematic research on the outlook and cooperative mode of china - korea farm produce trade under the frame of wto, by using the methods of system analysis, comparison and induction, cause and effect analysis, index evaluation in five aspects such as the economic communication actuality, agricultural comparable advantage, influence on china - korea farm produce trade caused by china ' s entering into wto and cooperative schemes of farm produce trade about the agricultural cooperative issue
本文在大量查閱分析國內外相關文獻、走訪有關機構和專家、到實地調研考察的基礎上，從宏觀的角度，以經濟學、國際貿易、產業組織等理論為指導，組合運用系統分析、比較歸納、因果分析、競爭力指標評價等方法，圍繞中韓兩國的農業合作問題，從中韓經濟交流現狀、中韓農業的優勢比較、中國加入wto對中韓農產品貿易的影響、中韓農產品貿易合作方案等五個方面，對wto框架下中韓農產品貿易前景與合作模式進行了較深入系統的研究。A computational method is developed with couples the governing equations of the unsteady flow field and the rigid - body dynamics in six degrees - o f - freedom. 6. facing the complex multi - element and high - lift configuration, a series of methods including multi - zone algorithm and face - to - face technique is developed to lower down the great difficulties of grid generation and finish flow calculation of high - lift system with the dual - time method
採用基於自適應直角切割網格的分區面搭接方法，結合隱式雙時間推進演算法，實現了三維復雜增升裝置繞流的euler方程數值計算，發展了對存在不連續面的高陞力系統外形進行流場計算的一種方便、實用、高效的三維增升裝置繞流計算方法。In modern aircraft design, there is an urgent requirement for accurate, efficient and easy - to - use numerical analysis tools. for this purpose, this thesis introduces recent progress in the generation and application of cartesian grid with tree data structure and adaptive refinement. coupled with hybrid grid techniques, euler and navier - stokes equations are solved
本文針對現代飛行器設計中對實用、高效、準確的氣動力分析工具的迫切需求，基於叉樹數據結構，發展了一種自適應直角切割網格方法，採用混合網格技術，實現了對流場euler和navier - stokes方程的計算求解，進一步完成了復雜增升裝置繞流和外掛物分離投放非定常流場的數值模擬。In the qualitative, quantitative and directional way, successful factors, such as the superiority of marketing, the superiority of resource, the superiority of consumption, and the advantage of corporations supporting, etc, were described, and six important background factors, include of the increasing consumption, the competition from milk market, the challenge of joining into wto, the adjustment of industry structure, the winning against oneself, and accelerating development, were analyzed. new objects were put forward, that is, high quality, rationalizatio n of region distribution, having a core of brand, trade penetrating into various area, diversification of product exploitation, internationalization of preponderant product, and orientating function in market. development of tianjin milk industry should be based on materials and base, take resource integrating and market regulating as means, take trade infiltrating and product development as support, take specialization, industrialization, collectivization and internationalization as orientation, take the development of international milk corporation as mode, and take " creating name brand, entering the first - ten corporation of milk industry " as object
本文在廣泛調查研究的基礎上，圍繞天津奶業發展，全面客觀地評價了天津奶業發展現狀，採用定性、定位、定量和定向的方法，描述了天津奶業作為城郊型奶業在競爭中形成的市場優勢、資源優勢、消費優勢、龍頭企業依託優勢、外資企業進入優勢、奶類項目援助優勢等眾多成功因素，分析了天津奶業未來保持產業領先地位必須認真對待的消費需求增長、乳業市場競爭、迎接入世挑戰、產業結構調整、克服自身劣勢、促進跨越發展的六大背景因素，提出了天津奶業新一輪發展瞄準優質生產無抗化、區域布局合理化、品牌整合核心化、行業滲透多角化、產品開發多樣化、高點對接國際化、市場避強導向化的目標定位和以原料、基地為基礎、以資源整合和市場調整為手段、以行業滲透和產品開發為支撐、以專業化、產業化、集團化、規模化、國際化的發展道路為方向，以國際乳品企業的發展為模式，以「創造一流品牌、跨入乳業十強」為目標的天津奶業發展思路，以及天津奶業二十一世紀前十年和前二十年兩大階段奶牛養殖的五大奮斗目標和區域布局原則，最後有針對性地提出飼養模式選擇、全流程安全生產、產業化龍頭培育、學生飲用奶推廣、政策扶持等促進天津奶業成長的對策措施。The flowfield over low - drag and long - range projectile with small attack angle is numerically studied from transonic to supersonic velocity. it provides basic work for aerodynamics characteristic of this projectile and for lateral jet interaction flowfield, and it shows this projectile can decrease drag. zonal method is tried to compute flow over projectiles and results is satisfied, but computation is much slower
系統研究了低阻遠程彈丸在小攻角狀態，低跨聲速、高跨聲速和超聲速時的非對稱繞流流場，為該彈形氣動力研究提供理論指導並為彈丸側噴流研究奠定基礎，結果顯示低阻遠程彈丸外形具有優化繞流場、減小空氣阻力的特點。About the three fundamental problems, in this paper, the author has constructed a research framework in which the theory of trade costs and the theory of business process reengineering are united, trying to combine the latest research achievements of net economy with the e - commerce application fruits and problems all over the world together, and systematically considering the challenges of e - commerce that we are facing. in this paper, author has attempted to summarize the developing measures of e - commerce in ruitong ltd. by applying the theory of marketing a business process reengineering in the view of combining the competitive strategies of ruitong ltd. with the features of e - commerce
論文緊緊圍繞這三個基本問題，構建了一個以交易成本理論和業務流程再造理論為一體的研究框架，力求將最新的網路經濟理論研究成果與目前國內外電子商務應用成果及問題結合起來，系統地思考我們所面臨的電子商務的挑戰；並嘗試從瑞通公司競爭策略與電子商務特點相結合的角度，運用市場營銷理論和業務流程再造理論，提出瑞通公司的電子商務發展對策。分享友人