推力方向變化 的英文怎麼說

中文拼音 [tuīlìfāngxiàngbiànhuà]
推力方向變化 英文
thrust orientation change
  • 推 : 動詞1 （向外用力使物體移動） push; shove 2 （磨或碾） turn a mill or grindstone; grind 3 （剪或削...
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 推力 : visatergo; soot; propulsive force; thrust; momentum thrust
  • 方向 : direction; orientation
  1. The complex nonlinear pursuit - evasion model of two spacecraft in near - earth coplanar orbit is simplified to linear model, the circular region the radius of which is equal to capture radius is defined as target set, capture is achieved when the evader come into the target set and the game is over ; the boundary of useable part ( bup ) is determined, and the analytical form solution of the linear equations is obtained by backward integration of the state variables from the bup, the linear barrier of the pursuit - evasion model and the optimum thrust of the both sides are thus obtained

    本文將近地共面軌道內運動的兩飛行器非線性追逃模型簡化為線性模型，以捕獲半徑的圓域定為目標集，確定目標集邊界上的可用部分，並以此為各狀態變量的起點，對時間進行倒向積分，求得線性方程組的解析解，從而確定了該追逃模型的線性界柵，以及界柵上對策雙方的最優推力，即求得了滿足最優策略時相對運動的軌跡和推力。
  2. On this foundation the article inducts in detail the method which is based on the relative settlement of calculating unit area end support ( qb ) force at the same time considering the feature of pedestal pile ' s " arch effect " the article introduces conception of pile effective length and finally obtain t he formula of calculating man - made pipe with bulb - shaped axial carrying capacity. the article uses marc program to calculate and analyze foundation soil ' s stress and displacement and gets the change curve chart and the proportion that is shared by king - pipe side soil friction resistance and pipe end counterforce respectively. the article inducts the structure of pedestal in detail on the basis of generalizing pedestal application cases of many countries

    在此基礎上論文詳細歸納了以相對沉降為依據確定單位面積端承力q _ b的計算方法，並考慮擴底樁的「拱效應」特點引入了有效樁長的概念，最後結合公路規范推出了比較實用的人工挖孔擴底樁軸向承載力計算公式。論文運用了marc程序對地基土的應力和位移進行了有限元數值計算分析，得到了地基土的應力和位移場的變化曲線和在加載過程中樁側土摩阻力和樁端反力各自所承擔的比例；本文還在總結各國挖孔擴底樁應用情況的基礎上就擴底樁的構造進行了詳細的歸納。
  3. A mathematical model reflecting the tilt rotor unsteady and nonlinear aerodynamic characteristics in the longitudinal channel is presented in the paper. in the full flight envelope, the rotor thrust continues tilting and the aerodynamic forces of each component change as a function of airspeed and nacelle angle

    在整個飛行包線內，旋翼的推力矢量方向不斷變化，飛機各部件的氣動力隨發動機短艙傾角和空速的變化而變化，因而飛機的飛行動力學有很強的非定常、非線性特性。
  4. Back grounded with the popularization and the massive scale development of higher education of china, the newly - founded colleges under local administration not only serve as the driving force to promote the economic and social development of the district, but also emerge as an important factor conducive to the local - oriented development of chinese higher education. the challenges most of the colleges have to face up to is to restart a new undertaking and to carry out the transformation from college for professional training to college offering undergraduate course, and from college to university. during that transformation, it is substantially essential that certain features be formed

    在實現高等教育大眾化、我國高等教育超常規發展的背景下組建的新建地方性綜合學院，不僅成為推動區域經濟和社會發展的有生力量，而且也成為推動中國高等教育向區域發展的一支新軍。但它們都不可避免地面臨著再創業的挑戰，面臨著從專科到本科、從單科向綜合的轉變。在轉變的過程中，形成辦學特色尤其顯得重要。
  5. In chapter 2, an accurate modified reynolds equation is derived. the modified reynolds equation is solved numerically with the finite different method, the generated axial thrust force, minimal mucus film thickness, load capacity of hydrodynamic pressure and circumferential friction under the rectangular screw are obtained. at last, using numeral methods and coordinate graphs, the influences of rectangular screw parameters on the generated axial thrust force, minimal mucus film thickness, load capacity of hydrodynamic pressure and circumferential friction are studied and analyzed

    第二章，首先推導了非牛頓流體的變形雷諾方程，化簡了雷諾方程，得出了矩形螺紋下有限差分方程；還推出了矩形螺紋作用下軸向摩擦牽引力、粘液膜厚度、粘液膜承載能力、周向摩擦阻力無量綱表達式，最後用數值計算方法求解，通過坐標圖分析了矩形螺紋參數對軸向摩擦牽引力、最小粘液膜厚度、粘液膜承載能力、周向摩擦阻力的影響。
  6. The mathematic model of the ultra - thin spherical mirror is to be treated as elastic thin shell. then the predigested model, i. e., bended beam, used in qualitative analysis was proposed, and its deflection and stress formulas under the freely supported condition were set up. based on an off - axis aspherical primary mirror, the relationship of aspherical surface error ( rms ) in tangential plane with bended beam ’ s radius r, position s of concentrated load p and geometry length l of arc was analyzed

    根據這一設想，本文建立了超薄鏡的數學模型?薄殼，並提出了強制力作用下超薄鏡的簡化模型?曲梁，推導了曲梁在簡支情況下受力變形的撓度公式，並結合一個實例，計算出曲梁變形后與所需非球面的面形殘差（ rms ）在子午方向與曲梁弧長l 、曲梁半徑r及集中力位置s的關系及滿足面形精度的r和s范圍，分析了弧矢方向的rms ，得出了同時滿足子午和弧矢方向面形要求的l 、 r和p 。
  7. An on - line minimum - variance estimator was developed for thrust acceleration applied to orbit transfer using discrete - time radar measurements. the mass - flow - rate of propellant was selected as a state variant, which was estimated by employing an integral state model and ekf filter. the variation equations for measurement vector to mass - flow - rate have been established to linearize the discrete - time measurement equations. the algorithm has applied successfully to maneuver process in commanding satellite into geo - stationary orbit. the results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process

    飛行器軌道機動過程中，為跟蹤、定位機動目標和干預機動控制過程，需要統計處理離散的雷達觀測量實時估計推進發動機的推力，進而確定飛行器的瞬時軌道參數.本文所述演算法是該工程問題的探討和解決方案.文章建立了軌道機動過程中連續變質量運動模型和離散雷達量測模型，推進發動機的質量秒耗量作為表徵推力加速度的一個近似常量，應用擴展卡爾曼濾波對離散的雷達測量數據進行順序統計處理給出秒耗量的最小方差估計;文章詳細地推導了線性化量測模型的變分方程和觀測矩陣;模擬結果表明該演算法能快速、準確地估計推進發動機的質量秒耗量和向機動目標施加的實際推力
  8. Fueled by vigorous reform efforts, growth rates averaging nearly 10 percent annually have created a vast array of new job and investment opportunities, making china more prosperous. the effect of china s transformation from an inward - looking, planned economy to a more market - oriented, trading powerhouse has reverberated throughout the global economy, influencing everything from consumer choice to investment flows. rapid - fire growth has not been cost free, however

    中國經濟在過去20年中的迅猛發展是一個眾所周知的成功經歷。在大力改革的推動下，近10 %的平均年增長率創造了大量的就業和投資新機會，使中國變得更加繁榮。中國從閉關自守的計劃經濟轉向一個更為市場化的貿易強國所產生的效力遍及全球經濟，影響著從消費者選擇到投資流動的方方面面。
  9. So, how to enhance the power of competition of chinese industry and companies is being the issue which the academia had to consider. while the modularity, being an effective method to resolve complicated system or product, has been used in the design 、 exploitation and the production of computer since 60s, 20 century, and has been applied the realm the industry of auto, architecture etc. this method is changing company ’ s notion, promoting resource been distributed and utilize reasonable, enhancing the power of competition of industry, and promoting the corporation between enterprises. in a word, as the developmental direction of industrial organization in 21 century, modularity is changing the structure of industry and enterprise, and will take us into a modularity age

    而模塊化作為一種解決復雜問題的有效辦法，從20世紀60年代在計算機電腦產業的產品設計、開發和生產中得到應用開始，已經被越來越多地應用到汽車、建築、網際網路通訊等諸多產業領域，它促進了社會資源的合理分配和利用，提升了產業的競爭力;推動了企業間的合作，有助於產品生產成本和交易成本的降低;加快了創新的速度，為消費者提供了更多具有個性化的產品和服務… …總之，模塊化作為21世紀產業組織發展的方向，正在改變著現存企業的經營理念，改變著產業的結構，並將我們帶入到一個模塊化的時代。
  10. The article has researched the intention of agricultural industrialization which is guided by market and mainstay enterprises, based on agricultural product base organized by a lot of families, and characterized by joint management and mutual benefit. it also realized production specialization, product commercialization, service socialization and etc. the article has also researched the existing conditions of agricultural industrialization both at home and abroad. although it is different in national conditions and actual practice, the developed countries follows the market economic law and naturally steps on the road of agricultural industrialization. as the continuous reforming and opening up, china actively explores and enhances the management level of agricultural industrialization. the writer uses system changing theory, scale management theory, trade expense theory. market system theory and industrial economics theory, to put forward the main type of mainstay enterprises, which is divided by ownership, organization form, contact form and product. the writer thinks that development of mainstay enterprises can promote effective joining between small production and big market, the developing of high - benefit agriculture, establishing trade / industry / agriculture operation system, region economics and joining process between urban area and rural area. the existing conditions in strengthening the mainstay enterprises in zhaoyuan embodies continuous expanding in scale. continuous widening in fields, continuous enhancing in benefits, continuous improving in techology and quality. by finding the problem and shortage in product quality, developing ability and scale strength, the article has put forward the following views : face to market and enhance quality and techological content of agricultural products ; enforce flexible policy and investments ; establish fair and reasonable benefits joining system. the article has also put forward the countermeasures and suggestions on enhancing the enterprises ' management level

    文章研究了農業產業化經營的內涵，明確其以市場為導向、以龍頭企業為依託、以一大批農戶組成的農產品生產基地為基礎，形成農工商有機結合、風險共擔、利益均沾的本質特點，表現出生產專業化、經營一體化、企業規模化、產品商品化、服務社會化等特徵。分析了國內外產業化經營的現狀，認為盡管各國的國情不同，具體的做法和叫法不盡相同，但是經濟發達國家都遵循市場經濟規律，很自然走上了農業產業化經營的道路，發展中國家紛紛仿效，中國也隨著改革開放不斷深入，積極探索發展提高農業產業化經營水平。作者運用制度變遷理論、規模經營理論、交易費用理論、市場機制理論和產業經濟學理論，提出了龍頭企業從所有制形式、從組織形式、從聯系方式及從產品上劃分的主要類型；認為發展龍頭企業有促進小生產與大市場的有效對接、推動優質高效農業縱深發展、建立貿工農一體化運行機制、振興區域經濟、加速城鄉一體化進程等作用；考察了招遠市壯大龍頭企業推進農業產業化的現狀，表現在規模不斷擴大、領域不斷拓寬、效益不斷提高、技術不斷改進、質量不斷提高等方面；找出了龍頭企業產品質量上、開發能力上、規模實力上和行業自律上的問題和差距，提出了要面向市場，努力提高農產品的質量和科技含量，多策並舉，搞活投入機制，建立公平合理的利益聯結機制，加強行業自律，提高企業經營管理水平等對策和建議。
  11. On the basis of analysis of design criterion of shaft washer and housing washer of tandem composite type cylindrical roller thrust bearing, we present a mathematic model for optimal design in accordance with line contact requirement for cylindrical roller and race, design the washers thickness and thickness variation angle by the search algorithm of constrained stochastic direction

    摘要在分析串聯組合型推力圓柱滾子軸承軸圈和座圈設計準則的基礎上，按滾子與滾道線接觸要求建立其最優化設計數學模型，採用機械優化設計中的約束隨機方向搜索法計算軸圈和座圈的厚度、厚度變化角。
  12. With the help of dynamic qualitative information of working marine diesel power equipment in this field and expertise, a new long - distance oil monitoring expert system of marine diesel power equipment has been proposed and developed with the characteristic of expounding the dynamic features of marine diesel power equipment from the perspective of chaos knowledge, possessing intellectualized auxiliary decision - making mechanism based on fuzzy reasoning and neural network reasoning, utilizing mathematic analysis model established by means of track facility states of chaos vector and capable of evaluating the analysis results of oil monitoring facil ity ' s development of engine power and its working conditions accurately

    然後，結合廣泛搜集的本研究領域內船舶柴油機動力裝置在運行中的動態定性信息與專家經驗，研製開發了運用混沌學的觀點闡釋船舶動力裝置的動力特性，並擁有基於模糊推理與神經網路協作推理的智能化輔助決策機制，採取通過求取設備狀態混沌向量等方法建立的數學分析模型進行數據分析，能準確地評價船舶柴油機動力裝置油液監控設備狀態變化趨勢及其運轉狀況的遠程輪機油液監控診斷專家系統。本文研製開發的遠程輪機油液監控診斷專家系統在internet intrabet網路環境下，具有遠程智能專家診斷的特點。
  13. Finally, the wave equation of the electromagnetic field of this kind damper is derived from the maxwell ' s equation. the magnetic flux density at the boundary is assumed to be harmonic, so the analytical result of the wave equation is solved. when the rotor rotates, eddy currents flowing inside the conducting material field are caused

    最後，應用ahrens的電磁軸承簡化模型，從maxwell方程出發推導了應用於本文所述的被動式電磁阻尼器的波動方程，並用傅立葉級數把矩形磁場展開的諧變磁場作為磁場的邊界條件，通過求解波動方程得到磁場的解析解，從而計算了阻尼器對轉子的電磁力和由渦流引起的切向力產生的阻尼器附加功耗。
  14. A detailed model of non - linear parametric excitation vibration coupling the stay cable and the girder, in which the static sag as well as the geometric non - linearity are considered, is proposed in this paper. based on several numeric examples investigated by the galerkin method composed with the integration strategy, several kinds of factors effecting stay cable parameter vibration are studied. another parameter vibration model by the axial excitation is presented and the corresponding nonlinear equations are derived

    本文創新地提出了斜拉橋拉索-橋面耦合參數振動模型，推導了索-橋耦合非線性參數振動方程組，聯合galerkin法及數值積分方法，對各種特性的拉索進行了數值求解，得出了影響拉索參數振動的各種因素；提出了斜拉索受軸向端激勵參數振動模型，導出了模型的非線性振動方程，使用諧波平衡法得出了產生參數振動需要的最小激勵幅值、共振時瞬態及穩態的振動幅值及索拉力的變化特性，並用數值積分方法對實際斜拉橋拉索進行了計算，分析了拉索阻尼對參數振動的影響。
  15. A variable vector propeller, called the " varivec propeller ", is under development as a new propulsion system for the undersea robot. the varivec propeller is a kind of specific propeller that is capable of continuously generating any degree of thrust in any three dimensional direction by varying blades " pitches cyclically in the process of rotation and responds easily to the slightest change in the robot

    全方向推進器是一種在運動過程中螺距角可以變化的螺旋槳，該推進器是一種全新的設計，它最大特點是通過葉片螺距角在槳葉旋轉的過程中周期性的改變，產生前後、上下、左右六個方向的推力，並可以容易的對海洋機器人的微小運動作出反應。
  16. The second part discusses the way of the public medium estate developmellt, it points out tha the respechve media institutions, thected by the economy, way gradually pushed to the market the from of its rmgemen was changed, the living pressure is becondng greater and greater, they can only be developed through their industrial arrangement

    第二部分論述了大眾傳媒在九十年代的產業化發展之路，指出由於受市場經濟的影響，各傳媒機構被逐步推向市場，經營模式發生變化，生存壓力變大，只有通過產業化的運作方式才能求發展。
  17. Though many economists admire function of competition, market concentration ratio has an elevating trend in developed country, oligarch monopoly spread among world market. the contradiction of scale - economy and monopoly has changed, large - scale enterprise can move the lose of monopoly to world market, remain profit of monopoly ; advantage of monopoly is a important condition of competition power in developed country. reward increasing with enterprise scale is an objective law ; the efficient of large - scale enterprise is more excellent than middle - scale and small - scale in china manufacture industry market performance

    經濟全球化的發展，使各國形成一個接近一體化的市場，市場規模的變化對市場結構產生重要影響，雖然許多西方經濟學家仍然推崇競爭在提高效率中的作用，但是，工業發達國家市場集中度有逐漸提高的趨勢，並且在許多製造業中，寡頭壟斷向世界市場擴展，多個行業世界范圍內的寡頭壟斷格局開始形成，規模經濟和壟斷的矛盾發生了轉化? ?大企業能夠把由壟斷造成的損失轉嫁到世界市場，而把壟斷利潤留在跨國公司的母國，壟斷優勢成為發達國家產業競爭力的重要基礎。
  18. In the background of the international metropolis, the general tendency of shanghai ' s city appearance and environment & sanitation is : taking the trade programming as the goal and putting this task in the first place ; taking the function conversion as the center and promoting the trade ' s system reform comprehensively ; taking systematical construction as the key, motivating the process of legal system construction ; taking the extend of the management ' s objects as the orientation and arranging the general distribution of this trade properly ; taking the technique as the reliance and accelerating the construction pace of digital city appearance and taking the optimizing of manpower resource as the security and struggling to upgrade the level of management and service

    摘要在國際化大都市背景下，上海市容環衛行業發展的總體趨勢為：以行業規劃為先導，把市容環衛行業規劃工作放在首位；以職能轉變為中心，全方位推進市容環衛行業體制改革進程；以制度化建設為重點，加快市容環衛行業法制建設步伐；以管理對象的拓展為方向，理順市容環衛行業整體布局；以科技手段為依託，加快「數字市容」建設的步伐；以人力資源優化為保障，著力提升市容環衛行業的管理與服務水平。
  19. In order to fully develop the theory of squeezed branch piles, in particular, the justification of its superior performance in terms of the bearing capacity and sinking displacement, we have derived the analytical formulas of the axial load and the strain at arbitrary depth ; based on existing static loading test results and research on belled pile, together with the analysis of on - site testing data, we have applied the expand theory on sphere holes to the computation of radial stress of squeezed branch piles under hole expansion ; taking the oil pressure of hole expansion in to account, we have find the a branch force under certain hole pressures, hence we can estimate the maximum bearing capacity of single piles ; we have introduced the experiential formulas for the bearing capacity of squeezed branch piles based on its stress characteristic and pile testing data ; we have also done numerical simulations of squeezed branch piles utilizing finite element method software ansys ; we have matched the simulation res ults with those of on - site basic load experiments, regenerating the distributions of stress fields and strain fields of squeezed branch piles, and from those distributions, we can determine the optimal distances between plates and piles

    為了完善支盤樁的設計理論，探求支盤樁高承載力和低沉降量的內涵，本文推導出了支盤樁任意深度的截面荷載以及位移隨深度變化的理論公式；基於已有的靜載試驗成果及有關擴底樁的研究成果，從對現場測試數據的分析，將球形孔擴張理論引入到支盤樁擴孔時徑向應力的計算，考慮到擴孔時的油壓數據，求得某一孔壓下的支盤力，據此估算單樁極限承載力；同時根據對支盤樁的受力特點和試樁數據的分析，提出了支盤樁承載力計算的經驗公式；用有限元分析的方法，利用大型有限元分析軟體ansys對支盤樁進行數值模擬，並將模擬結果同現場的靜載試驗結果進行對比，再現了支盤樁在荷載作用下土中應力場和位移場的變化，根據應力場和位移場的變化范圍，指出最佳盤間距和樁間距；為支盤樁的設計和施工提供了一個可量化的設計依據。
  20. In this thesis, based on the principles of hydraulic mechanics and soil mechanics, the change of effective stress in soil mass and the settlement of ground surface induced by dewatering during excavation both in homogeneous soil and in layered soil were studied. analytical formulas for calculating the settlement and the others were derived under the assumption that the seepage induced by dewatering is one - dimensional and vertical

    本文運用水力學和土力學的基本理論，在一維豎向滲流的假定下對均質土和成層土中基坑開挖降水引起的坑內外土中應力變化及周圍地表沉降的計算方法進行了較深入的研究，推導了相應的地表沉降等計算公式。
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