chord ratio 中文意思是什麼
chord ratio
解釋
展弦比-
Based on the kinematical design criterion of equi - chord percent ratio and spatial rigid body guiding mechanism, three theoretical design methods of arc track, non - arc track, and helical track are proposed in this thesis, meanwhile, different design methods about prime flap and sub - flap driving mechanisms are completed. three cases of different three - gaps - fowler - flap tracks are designed
對后緣三縫富勒襟翼工作時的3個關鍵位置，按照「等弦長百分比」運動的設計準則和空間剛體引導機構的設計思路，提出了圓弧軌道、非圓弧軌道和螺旋線軌道等3種空間位置引導軌道的設計原理，並分別給出主襟翼和子襟翼驅動機構的不同設計方法。 -
To meet the demands for large space and flexible compartmentation of buildings, laminated vierendeel trusses are adopted in high - position transfer story structures. first the bearing characteristics are analyzed, in which reasonable stiffness ratio of the upper chord, middle chord, and lower chord is derived. then combined with an actual engineering model ( 1 8 similar ratio ), the static loading and pseudo - dynamic tests of two models for laminated vierendeel truss used in transfer story structures are conducted, in which one model adopts reinforced concrete, and the other adopts prestressed concrete and shape steel concrete. seismic behaviors are analyzed, including inter - story displacement, base shear - displacement skeleton curves, and equivalent viscosity - damping curves. a program is programmed to carry out the elasto - plastic dynamic analysis, and displacement time - history curves of the two models are derived. the test and analysis results show that the laminated vierendeel truss with prestressed concrete and shape steel concrete has excellent seismic behaviors. it can solve the disadvantages of laminated vierendeel trusses used in transfer story structures. finally, some design suggestions are put forward, which can be referenced by similar engineering
為滿足建築物大空間和靈活隔斷要求，在高位轉換層結構中採用迭層空腹桁架結構.首先分析了其受力性能，得出了空腹桁架各構件合理的截面剛度以及布局形式.然後結合一實際工程，進行了兩榀迭層空腹桁架轉換結構模型（ 1 : 8相似比）的豎向荷載下靜力試驗以及擬動力試驗.其中一榀為普通混凝土迭層空腹桁架，另一榀配置了預應力和鋼骨混凝土，對比分析了兩模型的層間位移比、骨架曲線以及等效粘質阻力系數等抗震性能的比較，並進行了彈塑性動力分析.試驗和分析結果表明，配置預應力和型鋼混凝土的迭層空腹桁架轉換結構具有良好的抗震性能，可以成功地解決迭層空腹桁架作為轉換層結構所產生的弊端問題，最後對這類轉換層結構提出了相應的設計建議 -
The cycle ratio of logistic in book of changes to chord sequence
和弦連接的易經數理周期率 -
The results show that the drag of grid fins is little affected by width to chord ratio, the normal force of grid fins was large, and that the smaller was the ratio, the better was the characteristics of the grid fins ' s normal force in tested sizes of width to chord ratios
結果顯示，在所選擇的格寬翼弦比范圍內，格寬翼弦比對阻力的影響不大，對法向力有明顯的影響，格寬翼弦比越小法向力特性越好。 -
For the overlapped joint with greater ( ratio of flank rod thickness to chord rod thickness ), the ductility of the joint subject to repeated loading was more deteriorated
對于搭接節點（腹桿與弦桿壁厚比值）值較大時，節點承受反復荷載時的延性較差。 -
It is also found from the tests that the ultimate capacity of connection is greatly affected by the ratio of the width of branch to that of chord, the thickness of chord and the angle between chord and branch
試驗結果顯示，節點的承載能力與腹桿和弦桿的寬度比、弦桿的壁厚、腹桿和弦桿夾角密切相關。 -
The focuses of this paper are on flight environment simulation and high span - chord ratio uav model
本文的工作就是圍繞飛行環境模擬和無人機動力學模擬展開。 -
For the first time, flight simulation related to high span - chord ratio uav based on variable windfield is executed, the facticity of windfield and its influence to flight performance curve are analyzed. 5
首次針對大展弦比無人機，進行變化風場中飛行模擬，討論各風場模型的真實性及其對飛行性能曲線的影響； 5 -
Metallic materials - determination of young ' s modulus, chord modulus, tangent modulus and poisson ' s ratio statical method
金屬楊氏模量弦線模量切線模量和泊松比試驗方法
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