流線型斷面 的英文怎麼說
中文拼音 [liúxiànxíngduànmiàn]
流線型斷面
英文
streamlined section- 流 : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
- 線 : 名詞1 (用絲、棉、金屬等製成的細長的東西) thread; string; wire 2 [數學] (一個點任意移動所構成的...
- 斷 : Ⅰ動詞1 (分成段) break; snap 2 (斷絕;隔斷) break off; cut off; stop 3 (戒除) give up; abstai...
- 面 : Ⅰ名詞1 (頭的前部; 臉) face 2 (物體的表面) surface; top 3 (外露的一層或正面) outside; the ri...
- 流線型 : streamline; streamlining; fairness; hydraulic form; hydrodynamic form流線型車體 racing body; 流線...
- 流線 : filament line; filum aquae; flow line; streamline; streamlining; line of flow; stream filament流...
- 斷面 : section; fracture surface; plane of fracture
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On the basis of remote sensing technique ' s good characteristic with large - area, multi - time, multi - photograph variety, manifold abundant spectral information and high ground resolution, the fault tectonics frame, river geomorphy ( such as terrace, floodplain, shoal, etc ) and suspended load, etc. were explained after analyzed the fault tectonics, river geomorphy, characteristic in the tm image by gray bar statistics, primary component analyses, tm741 image integration, line convolve enhancement and model recognition etc. especially 9 piece of fault tectonics were explained in this thesis, in succession, the impacts of the factors severally were analyzed
遙感技術具有大范圍、多時相、多片種、多層次、含有豐富的光譜信息及具有較高的地面解析度的特點。本文利用該技術,運用灰階統計特徵分析和主成分分析、 tm741多波段融合、線性卷積增強、模型提取等一系列遙感解譯分析方法,分析了斷裂構造、河流地貌(階地、漫灘、沙洲)及懸浮物等在tm遙感圖象上的影像特徵,解譯出了安徽南部斷裂構造格架、河流地貌和懸浮物的分佈,並新解譯出了9條近東西向的斷裂。( 2 ) a series of experiments on time scale distortion are made with real river model, inflow and outflow boundary condition, and continuous simulation. by means of analysis of the experimental data on model water level, water - surface gradient, cross velocity, outflow discharge process and the sediment transportation capacity, the main physical reasons for the above hydraulic parameters deviations caused by time scale distortion are illustrated : response delay of model channel storage capacity and rate of water level with time
( 2 )採用真實的河工模型和入出流邊界控制條件以及連續模擬的方法進行了有關時間變態率的系列試驗,通過模型水位、比降、流速、出口流量過程線和斷面挾沙力試驗資料的分析,闡明了時間變態引起上述各種水力參數偏離的主要物理原因:模型的槽蓄響應和洪水過程時間變化率的響應滯后。Over the years, lrt technology has been upgraded to counter the negative effects of traffic jams, noise, environmental damage, air pollution, etc. featuring a small radius of curvature, multiple car units, modulated train set, enlarged cars both in transverse and longitudinal directions, low car floors, streamlined car design, advanced control systems, and flexible right of way, modern lrt systems have been successfully adopted to most environmental and social needs. they adequately display their merits as transportation systems ; i. e., the lrt system is able to co - exist with automobiles. the low car floor means that roads can act as station facilities, and passengers can get on and off the cars in the street
輕軌運輸系統lrt源起於歐洲街道電車street car ,街道電車一度在都市捷運化與私人機動化的浪潮沖擊下迅速沒落,但隨著都會地區機動車輛不斷增加,道路交通阻塞噪音環境破壞排放廢氣污染問題嚴重惡化之際,輕軌車輛技術已不斷提升,具備小轉彎半徑能力的聯結式車廂模組化列車編組車廂斷面長度加大加長低地板車廂流線型車廂設計,搭配先進控制系統及彈性的路權型式,使現代化輕軌系統具備有與生活空間結合重視環境問題與社會情勢並活用進化街車之都市交通工具等特徵與優點,如高性能輕軌列車與汽車共存,低底盤的車廂創造無障礙車站空間,道路即是車站設備,旅客可以在街區上下車,提供沿線居民高度的便利性,消除交通堵塞噪音及空氣污染等,輕軌系統並與街景充分的調和,成為活動的都市意象。By use of the model, the gdp change, the benefit per unit water, the water flow into sea and the discharge change of main river section are obtained for beneficial regions of the south - to - north water transfer
通過模型框架,將水資源系統中的宏觀經濟子系統和水資源子系統相互作用通過內生變量聯接起來,分析南水北調西線工程對黃河流域受水區的影響,得到黃河流域二級區不同配水方案相對于無調水情況的gdp變化、單方水效益、人海水量和主要斷面流量過程變化等。With the development of power system, on one hand, the capacity of the power system is increasing very rapidly and the system current becomes larger and larger, so it becomes very difficult for a traditional current transformer ( ct ) to undertake the measurement task. on the other hand, with the optimization of the administration and allocation of the power energy, it is very urgent to develop a new type of ct to meet such requirement
隨著我國電力系統的不斷發展,一方面,電力系統的容量在不斷加大,系統電流值不斷增加,一次側電流值的測量對傳統的電流互感器越來越困難;另一方面,隨著運行管理和調度向著快速,可靠,自動化方向發展,要求對電力系統的運行進行在線監測和實時控制,對作為一二次側聯絡設備的電流互感器提出了更高的要求,要求設計出一種新型的適應電力系統發展需要的電流互感器。The main object of this paper is to design a diagonal impeller, which requires small size and high rotating speed. the first step of the design is to solve the radial equilibrium equations on the s2 stream surface. second, the blades designed according to the results of the first step
方案計算是為二維設計做基礎;二維設計是在s2流面內用流線曲率法求解完全徑向平衡方程,利用流場計算的結果來初步判斷設計的工程合理性;葉片造型利用s2流場的計算結果,近似沿著氣流流面進行造型。2. calculating and analyzing the scouring and filling up of engineering across section by using two - dimensions water and sand mathematics model which is put forward in this paper. the result provides foundation for engineering designing
( 2 )提出利用二維水流、泥沙數學模型計算分析了在出現極端水情下,工程過江斷面沖淤的情況,為隧道穿越長江的軸線設計提供了依據。At the meantime, the rock mass may alternate between loading and unloading and it exists in certain kind of liquid, such as surface water, unconfined water, confined water etc for its intrinsic crannies. the practical rock mass concerned project must solve the key stability pr oblem after the understanding of the complicated mechanical characteristic and the deformation trends to guide the following project design and construction for the demand of security, economy, feasibility and validity. however, the intrinsic nonlinearness and complexity of the engineering rock mass become the main difficulty to predict the stability and deformation, the corresponding structure design must ensure enough safety with all the determinate or random force combination, so a model without the geometry distortion and constitutive equation warp is necessary to be built for the quantificational analysis of practical structure ' s stress, for the simulation of the real process and for the determinate evaluation system and optimization
由於實際工程巖體其固有的非線性和復雜性,使得求解對應的諸如其穩定性、變形等問題面臨較大的困難,而有關的工程結構的設計必須保證該結構在外來因素的作用下具有足夠的安全度、經濟性和合理性,這必然要求對巖體及其工程結構的受力與變形有一套量化評判體系和優化技術,抓住實際工程問題的本質特徵並建立可行的符合幾何模擬、本構模擬、受力模擬、過程模擬四原則的求解模型,通過該模型的數值模擬成果來指導巖體工程的設計、施工及運營、管理;而巖體結構面的存在使得基於傳統連續介質力學理論的理論分析和數值模擬面臨巨大的挑戰,物理模擬的試驗周期和成本也大大增加,而巖土體工程問題則成為典型的數據有限、了解程度有限類問題,這類問題的解決需要綜合應用理論分析、經驗判斷、物理模擬和數值模擬等方法,數值模擬可以完成目前許多技術手段無法完成的實驗,如參數控制,復雜條件下的邊界條件的處理,同時數值模擬具有高可重復性,且數值模擬的成本和人力開銷等遠低於物理模擬,因此研究巖土體工程問題的流形元數值模擬方法是一項具有理論和實際工程應用價值的重要課題。Thirdly, the short - term and long - term financial early - warning system is established based on the financial statements of marketing corporation in electric power, medicine and general merchandise. systematic method, efficiency coefficient method and linear regression method are applied in the short - term financial early - warning system from the aspect of cash flow, operating performance and function model ; growth periods method and management grade method are applied in the long - term financial earl y - warning system from the aspect of growing capability and financial stratagem. finally, lots of examples are given to validate these early - warning models, and some countermeasures are discussed for avoiding and eliminating the distress of enterprise
首先,介紹了企業財務預警的概念、功能和國內外的研究現狀;其次,闡明了企業財務預警的原理、程序和方法;再次,它以電力、醫藥和百貨行業的上市公司報表為資料,按照指標選取、標準判斷、警限設置和警度預報的步驟,從企業的現金流量、財務業績和函數模型三方面,分別運用系統化方法、功效系數法和線性回歸法構建了企業短期財務預警系統,從企業的成長能力和財務戰略兩方面,分別運用周期波動法和管理評分法構建了企業長期財務預警系統;最後,舉了大量實例對構建的各個預警模型進行考證,並從財務角度探討了企業的防警和排警對策。In the third chapter, study on the rational cross section of steel stiffening box girder for the suspension bridge, through the fully comparative study with the ordinary hexagon streamlined steel stiffening box girder widely used in the present suspension bridges at home and abroad and taking the reality in the bridge into account, a updated streamlined steel stiffening box girder with fim has been developed and applied to the bridge successfully
在第3章?大跨懸索橋鋼箱梁合理結構型式研究中,對現代大跨懸索橋通常所採用的鋼加勁梁的斷面型式進行了比較研究,特別是對普通的六邊形流線型箱形斷面和本文提出的魚鰭型流線型箱形斷面從結構受力和經濟性等方面進行了分析比較,為後者在宜昌長江公路大橋上的成功應用提供了可靠依據。In addition, aerodynamic stiffness and aerodynamic damping on the system are already obtained in the condition of fluid - structure interaction. it is known that aerodynamic loads are associated with blade vibration. the systematic eigenvalues are used to judge whether the flutter occurs so as to find the stable operating range of a wind turbine
本文把風力機葉片簡化為懸臂梁,對梁截面的二維葉型建模,完整推導了二維葉型的線性運動微分方程和流構耦合條件下系統的氣動剛度和氣動阻尼,此時氣動載荷與結構的位移矢量以及速度矢量是相互耦合的,再利用系統的特徵值來判斷葉片顫振是否發生,從而獲得風機的穩定工作范圍。分享友人