脈動推力 的英文怎麼說
中文拼音 [màidòngtuīlì]
脈動推力
英文
oscillatory thrust- 脈 : 脈名詞1. (動脈和靜脈的統稱) arteries and veins2. (脈搏的簡稱) pulse 3. (像血管的組織; 連貫成系統的東西) vein
- 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...
- 脈動 : [物理學] [天文學] pulsation; pulsing; pulse; ripple; impulsive motion; pulsating; panting; loping...
- 推力 : visatergo; soot; propulsive force; thrust; momentum thrust
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In chapter 3, the subgrid eddy - viscosity model for large eddy simulation is applied to calculate the three dimensions unsteady periodic turbulent flow in yantan francis turbine. the pulsating characteristics of some main physical parameters in flow field are found. the calculated axial water thrust of hydraulic turbine agrees with the model - test value
第三章採用大渦模擬亞格子渦粘模型,對巖灘混流式水輪機的流場進行三維非定常湍流分析,得到了流場中各物理量的脈動特性,計算出ms的軸向水推力與模型試驗值大小相當;同時論證了對于下機架承重的混流式水輪發電機組可採用其推力軸承負荷作為水電站廠房振動的最大垂直激振荷載。The direct lateral force control is that more than one hundred small jet engines are installed around the missile before the barycenter. by firing up these engines produce impulse propelling force in order to adjust the position of the missile
姿控直接力控制方式是在導彈四周重心前徑向安裝的很多個小型噴流發動機,控制噴流發動機點火,產生脈沖推力,對導彈進行姿態調整。Objective to evaluate the diagnostic value of color doppler flow dynamic changes in patients with vertebral artery course variation
摘要目的:研究椎動脈走行變異患者推動脈血流動力學的超聲診斷價會值。Finally, by practical test, experimental data obtained show that the dynamic thrust measuring system is dramatically available and successful. especially, it shows that when the impulse width is 20ms and the duty ratio is 1 : 3, the measured results are stable and reliable. hence, the system designed here can meat the test requirements of the actual applications, and the technology studied in the thesis also give a good foundation to future research work
最後,系統建成以後,通過多次調試試車、考核試車和實際型號試車的考核,試車結果表明,該系統的設計是成功的,動態推力數據穩定、可靠,可滿足發動機以20ms脈寬工作,占空比為1 : 3的情況下,進行發動機的動態推力性能指標測試,滿足實際應用的需求,為進一步進行動態推力測試技術研究奠定了良好的基礎。According to the fluctuating property of wind, on the stochastic vibration finite element theory, some calculation formulas of the response, including the along - wind response and the across - wind response, are obtained, the ideology of the torsion vibration in the double - tower structure and the ideology of the double - tower structure ' s dynamical wind load are also put forward at the same time. by using the stochastic vibration module of the general finite element program, the paper analyses the performance of the wind resistance more deeply and fully, discussing the influence on the double - tower structure from the diversification of the different component. the variance law of dynamic displacement and wind - induced vibration coefficient is derived through analyzing structure stochastic vibration, so is the effect of several parameters on dynamic displacement, acceleration and wind - induced vibration coefficient
從結構風振的基本理論出發,通過對脈動風功率譜的分析,推導了結構風振響應(順、橫風向)的計算公式,同時提出了雙塔結構的扭轉振動和動力風荷載計算的思想,在結合通用有限元程序的隨機振動模塊的情況下,對雙塔結構的抗風性能作了深入、全面研究,探討了雙塔結構構件截面的變化對其抗風性能的影響,同時探討了順風向風速譜的選取、風速、參與計算的振型數、風與結構耦合作用是否考慮等因素對分析結果的影響,比較了規范風振系數的計算與隨機演算法結構的異同,並討論了原因,得出一些有意義的結論。The satisfying demand of customers " needs is responded through the aspects in quality, cost, delivery time limit etc. a prosperous development structure is formed. that is product with no adventure, development with no wasting, and production with no wasting. thus it is very helpful to improve management of enterprise activity and increase enterprise vigor, but the more important, consciousness of staff is basically altered to use effective way in enterprise, regard manpower as core, increase consciousness of the whole participation, construct a system to prevent disaster harmful trends and wasting from happening and facilitate the change of management conception at the same time
本文介紹了建設集團在2000年度下半年導入tpm活動(全員參加的生產經營改善活動) ,確定了質量、設備、生產、技術、成本、安全等六個方面的推進方向,在銷售、開發、購買、製造各個環節進行了實施,整個改善活動實施中以組織為脈絡,以現場為背景,以人力為核心,以管理為手段,以產品為結果作為切入點,把開發、生產及銷售過程作為企業生產經營改善的突破口,從質量、成本、交貨期等方面及時響應客戶所需產品的滿意要求,使公司形成了市場需要風險為「零」的產品,開發浪費為「零」 ,生產浪費為「零」的格局。It tries to foretell the developing tendency of the future public medium through the traits of its developing changes. according to the great pressure before china after its entering the wto, we can then have active response and propel our public medium. thus propei public media to another more brilliant " go1den age.
第五部分指出對九十年代我國大眾傳媒發展變化研究的目的是為了理清大眾傳媒發展的脈絡,試圖從其發展變化的特徵預測未來大眾傳媒的發展趨勢,針對我國加入叮后所面臨的巨大壓力,做出積極反應,從而推動我國大眾傳媒走向下一個輝煌。Thrust fluctuation ratio
推力脈動率The main results are as follows : 1. the propagation of an ultrashort intense pulse laser beam in low - density plasmas is investigated analytically. relativitistic pondermotive force and space - charge effects are included, and an equation describing the evolution of the laser spot size is derived
考慮有質動力與電荷分離場的平衡,推出了超短超強脈沖激光在低密度等離子體中的折射率、電子密度和電荷分離場的表達式以及激光束斑的演化方程。Abstract : in this paper, we study the random equation to elastic caminal rectangle plate under single concentrated random load by random vibration theory, and discuss the dynamic response to it by separating the variable, and study the frequency response function and unit pluse response function to the load and response
文摘:運用隨機振動理論,推導了彈性矩形薄板在單個隨機集中載荷下的振動方程,並用分離變量法討論了其動力響應,研究了對應于激勵與響應的頻率響應函數和單位脈沖響應函數。This paper uses of the actual mechanics form, cantilever bending stiffness is adopted in the mega structure, however shearing stiffness in the sub structure. based on the complex mode theory, this paper gains the expression of dynamical response of the system based the model of municipal no. l building of tokyo city and analyses the affection of the main parameters ( stiffness and damping ) on the two configurations ( sustaining type and hang type ). the results indicate that the rational stiffness of the sub structure can control the deformation of the mega structure perfectly, but the acceleration of the sub structure increases at the same time
本文採用了更接近實際的力學模型,主結構採用彎曲剛度,子結構採用剪切剛度,利用隨機振動復模態理論,推導了巨型框架減振結構的動力響應表達式,並以日本東京市政一號樓為基本模型,討論了巨型框架減振結構兩種結構形式(座承式和懸掛式)的主要參數(剛度和阻尼)對減振效果的影響,結果表明:與普通巨型框架結構相比,減振結構通過合理選擇子結構剛度,可以較好的控制主結構在順風向脈動風作用下的位移響應,從而提高結構的安全性,但與此同時,子結構自身的加速度響應也有了一定程度的提高。Gravitic launchers are massive railguns where mass drivers trigger the initial acceleration before the ships gravitic field is pulsed to squeeze the missiles toward the enemy at enormous speed
重力彈射器是大型的軌道炮,使用重力引擎獲得初始加速度,而後用船體的重力場脈沖以極高速度推動導彈飛向敵人。The motion equation of a high - rising structure subjected to fluctuating wind load is developed, with the consideration of soil - pile - structure interaction
摘要本文推導了考慮樁土結構動力相互作用時高層建築在脈動風荷載作用下的運動方程。The journal, aimed to be an integrated medium, shall keep pace with the construction progress of the urban rail transit projects in this country for their healthy development
《現代城市軌道交通》雜志將以整合型媒體作為辦刊目標,努力實現與我國城市軌道交通建設發展的脈搏同步,為推動城市軌道交通事業健康發展服務。分享友人