damping out 中文意思是什麼
damping out
解釋
黑腳病-
Based on the situation of demand exceeds supply in the market, the author would like to find out the constraints of the water chestnut development by use of pra ( participatory rural appraisal ) in a survey to carry out stakeholder analysis including the water chestnut farmers, government and processing companies. also, the author applied a tool of system theory to analyze the constraints of water chestnut plant production development. the results are as following : the study shows that a main factor that restricts the plant yield ( per unit yield ) and quality ( product quality ) of water chestnut is the low level of prevention and control of water chestnut culms damping - off ; a disease of the water chestnut
針對賀州市荸薺產業發展中的「銷大於產」的突出矛盾，筆者通過運用pra （參與式農村評估）方法，對荸薺種植區的農戶、政府機構、加工流通企業等進行了調查研究，並運用系統科學的方法對荸薺種植系統的不同組成因子的制約因素進行分析，得出研究結論如下：農戶對荸薺稈枯病害的綜合防治水平偏低，制約其荸薺種植的產量（單產）和質量（商品質量） 。 -
Based on extensive investigation of construction technique history of chinese ancient buildings, the structure method, structure developing history and seismic behavior of chinese ancient timber structure buildings are analyzed in several respects of the structural system and form. through a series of experiments on constituent parts of chinese ancient timber building structure, including the tests on the corbels and brackets called dougong subjected to low cyclic reversed loadings, the tests on the wooden frame using the tenon - mortise joints as connections of column and beam subjected to low cyclic reversed loadings, the tests on vibration isolation effect of friction and slippage between column footing and their socle base, and a series of shaking table tests on a chinese ancient timber structure palace building mode under artificial earthquake at serving conditions, destroyed conditions and reinforced conditions, many valuable results of structures such as moment - curvature hysteretic loops of dougong structure and tenon - mortise joints under low cyckc reversed loadings, the static function, the seismic performance, energy dissipation, vibration reduction, energy - loss mechanism, nechanicalmode and failure mode were studied. aplenty of valuable parameters of the structure system were obtained, such as the natural period of structure, vibration modes, damping ratio, factor of vibration isolation, oscillate amplitude of ineitial accebration, velocity and displacement, magnitude of slippage, and the mechanism of structure failure and collapse etc. based on these research, the complete analysis of ancient timber structure under earthquake were carried out in which including mechanism analysis method, calculating mode, strength analysis of members and joints, strengthening methods for serving damaged ancient timber structure buildings were also taken into account
依照宋代《營造法式》建造了抬梁式殿堂木結構構件及結構模型，對中國古代木結構中的典型構造如：柱腳在礎石頂面平擱簡支、柱架榫卯連接、柱高不越間之廣、側腳、生起、斗拱等的構造機理及結構功能進行了量化分析和實驗研究： （一）通過木柱石礎靜摩擦試驗，測定了柱腳與石礎古鏡面間的摩擦系數及摩擦力隨上部結構荷載變化的規律； （二）通過單柱承載力試驗，測定了古建築中木柱的受力變形特徵、破壞模式、及模型材料的變形模量、極限承載力、極限變形等參量； （三）通過柱架低周反復荷載試驗，測定了柱架的抗側移剛度、柱架恢復力特性及滯回曲線、榫卯張角剛度及其變化規律、柱架及榫卯的極限承載力和極限變形、及榫卯減振參數； （四）通過斗?低周反復荷載試驗和受壓試驗，測定了古建築木構件與木構件間摩擦系數，斗?抗側移剛度，斗?恢復力特性及滯回曲線，斗?抗壓極限承載力及受力變形規律； （五）通過抬梁式殿堂間架模型振動臺試驗，測定了殿堂木構架結構自振周期，地震反應振形、阻尼特性及阻尼比；按結構分層特點對柱腳、柱頭和斗?層上的屋蓋的地震反應採用多點同步測量，對柱根滑移、榫卯變形、斗?的變形、復位、耗能減振參數等進行了定量分析。 -
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 -
A test has been carried out on three typical bridges sectional models of flutter derivatives to find the general rules with the change of flutter derivatives of the bridges sectional model. and it has been discovered that this change depend on the torsional damping, an element closely relating to the h * 2 and a * 2 4
通過對三種典型斷面顫振導數的測試，考查了各顫振導數隨斷面形狀的變化趨勢，說明了最主要的變化體現在與扭轉阻尼有關的h _ 2和a _ 2項。 -
On schuler-tuned compasses this error is avoided by cutting out damping during changes in speed and course.
在休拉調諧羅盤中，這項誤差由於在速度、航向改變時切斷阻尼而避免。 -
On the contrary, because of the effect of positive damping provided by the inverter, the unit near a inveter will have no subsynchronous oscillation risk. based on the same method described above, a damping study is carried out for a hybrid ac / dc system, which include a hvdc link and an ac transmission line in parallel
研究表明，系統整流站附近的同步發電機組要承受電氣負阻尼作用，因此有可能引起機組低頻扭轉振蕩模式失穩；而hvdc的逆變站向其臨近同步發電機組提供正阻尼，因而機組不存在次同步振蕩危險。 -
Using the simulation method coupling of multi - body and finite element, the simulation model of frontal impact, side impact and car - pedestrian impact of a certain type of vehicle is established by madymo software, and the comparative analysis of impacting performance of the vehicle fitting with or without this equipment is made out. the simulation results show that the vehicle fitting with this equipment has better damping and energy absorption performance. combines with frontal bumper air bag, not only the injury to the occupants and pedestrians in crash accident can be decreased further, but also the damage to the vehicle can be decreased
3 .採用多剛體與有限元耦合的模擬計算方法，利用madymo軟體建立了汽車正碰、側碰及與行人碰撞的模擬模型，對有無該裝置時車輛的碰撞性能進行了比較與分析，結果表明安裝有該裝置時車輛具有更好的緩沖與吸能特性;結合前保險杠安全氣囊技術，不僅可以進一步減少碰撞事故對乘員及行人的傷害，而且可以減少碰撞事故對車輛本身的損壞。 -
Using the canonical variable representation ( x, p ), the light - damping oscillator is discussed by the corrected time - dependent perturbation methods of dirac, it is turned out that the energy levels have shift and breadth, and the wave function decaying with time exponentially
採用正則變數（ x ， p ）表象討論輕阻尼振子，並對量子力學含時微擾的狄拉克方法加以修改，得出量子能級有位移和寬度，以及波函數出現隨時間指數衰減的行為 -
Considering the influence of damping winding and if core is saturated or not, the no - loading emf waveform of a conventional generator having the same size with the prototype ( except the stator slot ) is analyzed, and the waveform deviation factor is taken out
對一臺具有與電力發生器樣機相同尺寸（除定子槽形）傳統發電機的空載電勢波形進行了分析。分析了不考慮鐵心飽和、考慮阻尼繞組影響和考慮鐵心飽和、考慮阻尼繞組影響兩種情況下，它的空載感應電勢，求取了空載電勢波形畸變率。 -
Finally, on the base of all work above and present condition, the experimental system is built up in light of the space environment of weightlessness and weak damping where the coupled structure works, and the experiments is carried out
該系統利用單軸氣浮臺實現了低阻尼運動基的建立，並採用反作用輪方< wp = 5 >式實現了在不引入附加阻尼的條件下運動基的機動。 -
2. the mechanism of the msd is discussed. it is pointed out that they can add both stiffness and damping to the main structure
分析本文軟鋼阻尼器的耗能機理，指出這種阻尼器可以給結構附加初始剛度，同時為結構提供附加阻尼耗散輸入的能量。 -
On the basis of these theories, the no - loading emf of powerformer is analyzed and the no - loading waveform deviation factor is taken out, in the conditions of considering the influence of damping winding and not considering it
在這些理論基礎之上，分析了考慮阻尼繞組影響與不考慮阻尼繞組影響兩種情況下電力發生器的空載感應電勢，求取了空載電勢波形畸變率。 -
Significance of some measures to improve the application of computer simulation technology in structural seismic analysis, including establishing or upgrading the hysteresis model and multiparameter failure criteria of structural members, studying the damping mechanism of structures during decomposing, discussing the application of database technology in simulation system, developing analysis models for innovating structures and algorithms for analysis of earthquake responses of structures with initial damage, and introducing parallel technology is pointed out
指出建立或完善構件層次的滯回本構模型和多參數破壞準則，研究結構解體前後的阻尼機制，探討數據庫技術在模擬系統中的應用，發展新型結構體系的分析模型以及具有初始損傷結構的地震反應分析方法，引入并行計算技術等對推動計算機模擬技術在結構抗震分析中的應用具有重要的意義。 -
Hybrid control combined the passive control, active control and semi - active control is more effective and more reliable for improving safety of building under the earthquakes. in this paper, a detailed theoretical analysis and numerical simulation were carried out for a new kind of structural vibration control system base - isolation & active variable stiffness / damping ( bi & avsd )
其中的混合控制選用被動控制、主動控制或半主動控制中的兩種（或兩種以上）控制技術相結合，吸收各種控制技術的優點，避免其缺點或存在的問題，使結構達到減震效果好，安全可靠，造價經濟，現實可行等多重效果。 -
Contrastive tests of damping aluminum - alloys, zinc - alloys and 45 # steel are carried out at the case of equal stiffness. the test results show that when the rocker bar is made of damping aluminum - alloys or damping zinc - alloys, the strain amplitude at the middle point of connecting bar is half of the one when the rocker bar is made of 45 # steel
在等剛度條件下對鋁基、鋅基阻尼合金和45鋼阻尼減振作川進行了對比實驗，實驗結果表明搖桿為鋁基和鋅基阻尼合金材料時，連桿中點動態應變曲線幅值只有45鋼時的一半左右，而且隨著曲柄轉速的提高，阻尼合金的減振效果更加明顯。 -
Chapter 1 begins with a historical survey into semi - active suspension technology, the initial product, developing of the semi - active suspension and status of its control are generalized, further requirement of technics and problems to be investigated are pointed out on this chapter. then it presents a new idea in design active damping suspension systems. also discussed are the subject and significance of the thesis and the content of this research
第一章綜述了半主動懸架的產生、發展及其控制現狀，在此基礎上指出了該技術的進一步要求和所需研究的問題；其次對各種懸架減振元件的發展進行了系統的分析比較；接著提出了一種新型的基於主動力反饋原理的半主動液壓阻尼懸架的實現構想；最後概述了論文的選題意義和研究內容。 -
In this pattern a new kind of infinite boundary element is developed to reduce wave reflection on the boundary. by this method, a simple and convenient numerical way is worked out and dissipation of the pore press, damping can be taken into account. it can not only solve the problem of material nonlinearity, but also be suitable for the problem of large deformation
考慮到反射波在計算區域內經多次反射、透射和散射對計算結果可能產生較大的影響，在上述飽和砂土有限元模型的基礎上，建立了一種新的動力無限元計算模型，該模型能滿足工程計算的要求。 -
In chapter four, two distinct experiments, the control of free vibration and the control of steady vibration, are carried out to explore the feasibility and effectiveness of passive vibration control with piezoelectric shunt damping system
在壓電分流阻尼被動振動控制理論分析的基礎上，進行了懸臂梁在初始擾動下的瞬態振動響應控制和持續激勵下的穩態振動響應控制實驗，從而驗證了壓電分流技術應用於被動振動控制的可行性和有效性。 -
The vibration absorption effects of damping aluminum - alloys, zinc - alloys and damping alloy interlayer beam are tested through a four bar linkage mechanism and the test results are carried out a contrastive research with numerical analysis results, and it is found that response curves obtained by test are similar with those given out by numerical calculation
以鉸鏈四桿機構為研究對象，測試了鋁基、鋅基阻尼合金及阻尼合金夾層梁的阻尼減振效果，並與數值分析結果進行了對比研究，結果表明實驗結果和數值計算結果基本吻合。 -
Some of the relationship between the performance and some factors of the hydraulic damping system was found out according to the calculation and analysis
然後針對50000kn汽車大樑液壓機的緩沖系統，分別從靜態和動態兩個方面進行了分析計算。
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