In this paper, ackerman steering linkage of double - wishbone suspension is taken as the study object, choosing the splitting joint and steering lever joint to carry out the design of optimization the mathematics models are established based on the multi - body system dynamics, applying its analysis method of kinematics to study the mechanism kinetic principles owing to more spatial factors considered, and calling off many hypotheses affecting the accuracy, compared with the traditional methods, the models are better to reflect the realistic motion principles, the results are more exact and applicable moreover, the force analysis is applied to the conduct mechanism the analysis method of dynamics in the multi - body dynamics is applied to study the forces applied on every component, working out the constraint reaction force of up and down ball joints, and developing the current computation program in the end, produce the upper wishbone geometry model in the ansys software package, meshing and carrying out the fea, testifying if the intensity of the wishbone meet with the requirements
本文以雙橫臂獨立懸架的轉
向傳動機構作為研究對象,選擇對斷開點和節臂球銷的位置進行優化設計,在此基礎上建立了基於多體系統動力學的導
向機構和轉
向傳動機構的數學
模型,運用該學科的運動學分析方法研究機構的運動規律,編制了通用優化設計軟體。由於考慮了更多的空間因素,取消許多影響準確性的假設,因此建立的數學
模型與傳統的方法相比更能反映實際運動規律,得到的優化結果也更加精確實用。此外,本文還針對導
向機構進行受力分析,在建立該機構的空間動力學
模型后,運用多體動力學中的動力學分析方法研究各個桿件的受力,計算出上下球鉸的約束反力,並開發出了相應的通用計算程序。
Educational criticism at the 21st century is characterized of extensive subject, outstanding hotspot, manifold form, its participation degree exceeding all the time before, aculeate saying and clear - sighted sensibility, and deep influence. all these show its healthy development trend
它題材廣泛、熱點突出;方法靈活、形式多樣;參與廣泛、規
模空前;話語犀利、情感鮮明;影響深刻、意義重大,
向人們展示出其健康發展的勢頭。
Fuzzy affine spaces and fuzzy vector subspaces
模糊仿射空間與
模糊
向量子空間
The agiotage adopts the service mode that " the passway is made " at the beginning of market development, such traditional operation mode has caused the tradesman of the behavior in securities trader ' s seller ' s market, weakness that this kind of traditional, regular, single operation mode caused securities trader ' s profit to be with single mode too at the same time, the income curve correlate with height of general trend of market development, exist and deviate from with investors " interests too on the value orientations
本文通過探索我國證券經紀業務的發展歷史和趨勢,得出最根本的結論是營業部轉型是必然,變「坐商」為「行商」 ,由「單一通道服務」
向「綜合理財營銷服務」變革是轉型的核心所在。東北證券江陰營業部作為傳統服務
模式的代表,本文詳細闡述了營業部結合自身實際應該採取的轉型策略及轉型后營銷策略,為指導營業部經營機制改革提供了系統的解決方案。
During the new - style school which stood for the new cultural and was sustained by the government was entering into the country, the private school which stood for the old cultural also was struggling to exist resorting to its agrestic adaptability and special functional agility. the private school was replying to the challenge from the new - style school. when the two style schools were facing each other, there formed the exceptive pattern of education
代表新文化的新式學校以政府為其後盾不斷地
向鄉村社會滲入的同時,代表傳統舊文化的私塾也以其特有的靈活性和鄉土適應性掙扎著生存,並回擊著來自「新學」的「挑戰」 ,二者交鋒對壘,形成了別具特色的新舊並存的二元教育
模式。
In all kinds of switches, thermo - optical switch, mems switch, liquid - crystal switch and air bladder switch are the trend of large - scale switch array, and lithium niobate electro - optical switches and electro - optical polymer switches are the trend of fast switches
在各種光開關中,熱光開關列陣、微機械光開關列陣、液晶光開關以及氣泡式光開關列陣由於集成度較大,因而將是大規
模陣列光開關的發展方
向。
Current situation and development of air cushion belt conveyor
氣墊帶式輸送機氣墊橫
向出流理論
模型的研究
In section one, by using fice scheme and time - gcm, a model of trace gases and oh airglow affected by gravity wave is set up, then the propagation of nonlinear gravity wave and the effect on trace gases and oh airglow are analyzed. the result shows gravity wave excited by tropospause forcing can propagate stably to the mesosphere through the stratosphere so that energy and momentum can be transferred from one region to another. in this process, gravity wave undergoes growth, overturning, convection and breaking
在第一部分的工作中,利用全隱歐拉格式和全球熱層-電離層-中間層-電動力學環流耦合
模式( time - gcm ) ,對重力波的非線性傳播及其在傳播過程中對中高層大氣中氧族和氫族成分和與之密切相關的oh氣輝輻射的影響進行了數值
模擬,結果表明,從對流層
向上傳播的重力波經歷了產生、發展、飽和、對流產生直至破碎的非線性演化,大氣的非等溫結構加速了重力波在中層頂區的破碎,重力波的非線性傳播是小尺度對流和湍流產生的一個重要的源。
The 654 - foot ship rolled onto its side south of the aleutian islands, forcing a dramatic helicopter rescue of the crew last night
昨晚該長達654英尺的輪船迅速駛
向阿留申群島南側,迫使(海岸巡邏隊)採取較大規
模的直升機援救行動。
After the study on the general industrial organization model, the paper defines radical innovation based high - tech industry and its characteristics, and then it points out that there are three different actual models, the first one being ambidextrous organization or pan - ambidextrous organization model featuring the cooperation between small enterprises and conglomerates, the second forward industrial convergence organization model and the third horizontal industrial convergence organization model
通過對一般產業組織
模式的研究,對突破型高新技術產業的概念進行界定,指出其特徵,並提出突破型高新技術產業組織的一般
模式和三種具體
模式: ( 1 )小企業與大集團的二元或泛二元組織
模式, ( 2 )前
向產業會聚的組織
模式, ( 3 )橫
向產業會聚的組織
模式。
The approach, supplemented by the real - term relation among the three player in the clinton period, is used in my paper to demonstrate that, without considering internal factors, their relation will move in the direction of amicability rather than conflict
因此本文在此引介此一理論
模式,並對其內容加以補充,再以村林頓總統時期的美中臺三角關系作為例證,以說明構成戰略三角的三個行為者彼此間的關系,在不考慮其內部因素影響的前提之下,將會朝
向友好而非沖突的方
向前進。
The results show that : the surface temperature in the central beijing is 6 - 8 higher than that in the suburbs. due to the unique topography the wind of beijing area during the day time is southern anabatic wind and is northern katabatic wind in the night
模擬結果表明城郊之間存在明顯夏季熱島效應,市區和郊區的溫差最大可達68邊界層風場受西北特殊地形的影響,白天盛行由南往北的上坡風,夜間轉為由北
向南的下坡風。
From a. d. 878 to a. d. 978, there was a large population immigration at the end of tang dynasty and the five dynasties in wenzhou, its causes were : huang chaos army ' s military activities in the south of the yangtze river caused the migration from the harassed around areas ( especially eastern fujian ) into wenzhou ; that zhu bao controlled and separated wenzhou kept it relatively more stable society for more twenty years than its around areas ; different political situation of qian ' s regime in wu and yue and wang ' s regime in mm and yue caused large - scale migration from fujian to southern zhejiaug ; the good political achievements of qian ' s local officials of stratocracy promoted wenzhou ' s development
摘要溫州唐末五代出現人口大量內遷的100年( 878 - 978 ) ,其原因是:黃巢義軍在南方的活動導致周邊被擾掠地區(特別是閩東)
向溫州移民;朱褒割據的溫州與周邊州縣相比維持了20多年的相對穩定;吳越錢氏與閩越王氏的不同政局構成福建大規
模向浙南移民;錢氏軍政地方長官的良好政績更促進了溫州的開發。
Education reform and practice of college mathematics course
數學建
模向高等數學課程的滲透與探索
With further development of the market economy of socialism, universities are transforming to a industry from a solo education function, the mode of opening school are changing into intensive from extensive
隨著我國社會主義市場經濟的深入發展,高校已由單一的教育職能逐步轉變成為一種產業。其辦學方式也由粗放型
向集約型轉變,即由注重辦學規
模向講求投入與產出的效率轉變。
With the improvement of integrated circuits, the requirements to crystalline perfection and its electrical properties have changed greatly, especially the micro - areas electrical properties and its uniformity
隨著集成電路由超大規
模向甚大規
模的發展,對晶體的完美性、電學特性提出更為嚴格的要求,特別是微區的電特性及其均勻性更引起人們的關注。
It is of great importance and necessity to reform and refresh the o & m modes experienced among the most of the provinces and regions to pull forth the level of service with efficiency and to cater for the demand of customers and to eliminate the obstacles of development of expressway management system. its main objective is to exert the social and economical benefits of construction of expressways through a system of highly efficient and well - organized o & m mode
在高速公路以前所未有的速度和規
模向連線成網加快發展的新時期,如何對高速公路這一現代化交通設施進行有效的管理,如何消除現行管理體制中妨礙高速公路發展的因素,建立起適應社會主義市場經濟要求,適合高速公路特點和運行規律的統一、高效的管理體制,充分發揮高速公路的經濟效益和社會效益,成為高速公路發展中迫切需要回答的課題。
Relying on hong kong designers who follow closely and keep control of international fashion, u - right garment provides the consumers with hundreds of varieties of leisure garments of high quality every year
憑借著源於香港設計師對國際時尚的追蹤和把握,佑威服裝以每年數百款的規模向消費者提供高品質的休閑服裝產品。