水動力現象 的英文怎麼說
中文拼音 [shuǐdònglìxiànxiàng]
水動力現象
英文
dydrodynamic phenomena-
Urodynamic studies revealed marked increase of maximal urethral closure pressure ( mucp ) - 210 cm h20, caused by decompensation of polyuria
尿路動力學檢查顯示，最大尿道閉鎖壓力明顯升高，達210公分水柱壓；概由於多尿而造成代償現象。Based on the research of the characteristics of piezoelectric ceramic, this paper presents the analysis of the movement of the stator surface points and work principle of motor. this paper describes a theory about the influence of the ultrasonic vibration on the frictional properties of ultrosonic dring, and finds that the horizontal vibration produces friction driving force and vertical vibration affects horizontal driving effect
並且對行波型超聲波電動機的減摩現象進行了研究，發現在接觸區定子表面上一點的水平振動產生摩擦驅動力，垂直振動只起影響水平驅動效果的作用，得出垂直方向超聲振動具有減振作用是引起超聲驅動動摩擦系數降低的原因。The physical phenomena of underwater explosion are analyzed, and the initial velocity equations and dynamics equations of water particles, which compose the water columns, are set up
從分析水中爆炸的物理現象入手，建立了構成水柱的各水粒子的初始速度計算模型，結合水粒子的受力情況，給出了水粒子的運動方程。It is necessary to control the mechanical stimuli precisely in the studies of cardiac mechano - electrical feedback ( mef ). in the present study a ventricular pressure - clamping system has been developed, which can be applied to isolated - perfused rabbit hearts. controlled by a computer, this system not only can make the left ventricle follow a command defining the same pressure wave as that during a beating cycle under physiological condition, but also deliver mechanical stimuli with a proper waveform to the ventricle at a particular time phase. this system integrates multiple functions, including perfusing, pacing, recording of electrocardiogram and monophasic action potentials, and clamping and measuring of ventricular pressures in isolated - perfused hearts. thus, it is a distinct system for investigating the phenomena and mechanisms of cardiac mef at organ level
在心臟機械電反饋的研究中準確控制機械刺激是非常重要的.本研究室構建了一套適用於離體家兔心臟的心室壓力鉗系統.該系統通過計算機控制壓力鉗，不僅能模擬正常生理條件下左心室的壓力波形，還能在心室活動周期的特定時相、以適當波形對心室施加機械刺激.該系統集心臟灌流與起搏、表面心電圖記錄、單相動作電位記錄、心室壓力鉗制與測定等多種功能於一體，特別適用於器官水平上觀察機械電反饋現象並探討其機制Abstract : it is necessary to control the mechanical stimuli precisely in the studies of cardiac mechano - electrical feedback ( mef ). in the present study a ventricular pressure - clamping system has been developed, which can be applied to isolated - perfused rabbit hearts. controlled by a computer, this system not only can make the left ventricle follow a command defining the same pressure wave as that during a beating cycle under physiological condition, but also deliver mechanical stimuli with a proper waveform to the ventricle at a particular time phase. this system integrates multiple functions, including perfusing, pacing, recording of electrocardiogram and monophasic action potentials, and clamping and measuring of ventricular pressures in isolated - perfused hearts. thus, it is a distinct system for investigating the phenomena and mechanisms of cardiac mef at organ level
文摘:在心臟機械電反饋的研究中準確控制機械刺激是非常重要的.本研究室構建了一套適用於離體家兔心臟的心室壓力鉗系統.該系統通過計算機控制壓力鉗，不僅能模擬正常生理條件下左心室的壓力波形，還能在心室活動周期的特定時相、以適當波形對心室施加機械刺激.該系統集心臟灌流與起搏、表面心電圖記錄、單相動作電位記錄、心室壓力鉗制與測定等多種功能於一體，特別適用於器官水平上觀察機械電反饋現象並探討其機制The characteristics of high pressure gyratory sprayed pumping discusses is presented, which is applicable in wide range of scope and ground layers, convenient for construction, long durability, wide source of materials. mechanism for subgrade strengthening : complex foundation of cement solid and earth between piles was formed by pulsant load of flowing pressure and spraying flow, water wallop, cavitation phenomenon, water wedge effect, extrusion force and air flow agitation etc so as to enhance foundation bearing force and reduce settlement and deformation
高壓旋噴注漿技術具有適用范圍、適用地層較廣，施工方便，耐久性好，材料廣闊等特點；其加固地基機理主要是通過流動壓、噴射流的脈動負荷、水塊的沖擊力、空穴現象、水楔效應、擠壓力、氣流攪動等效應形成水泥固結體與樁間土的復合地基，從而提高地基承載力，減少沉降變形。On the basis of the characteristic of the industry waste slag, which is high added to the hsfab, different kinds of catalyzing methods are adopted to make the waste residue more active. the additive f, developed by the author can obviously improve the mechanics characteristic and durability of hsfab, especially the restraining of the drying shrinkage. based on the study of technics parameters and the problems in the manufacture, hf - 1100 series full - automatic hydraulic pressure wall brick presses is chosed to solve the problems, such as low molding pressure, low efficiency and the certified product ration
在hsfab的研究方面，通過兩種體系hsfab （即「水泥?鋼渣?粉煤灰?爐渣」和「石灰?鋼渣?粉煤灰?爐渣」體系）的配方優化設計，使之具有良好的社會、經濟和環境效益；在高摻量工業廢渣的前提下，根據各種原料的特性，對其採用不同的活化技術，使其具有較高的活性；自研的外加劑f ，對hsfab製品的物理力學性能和耐久性能均有明顯的改善作用，尤其是對製品的乾燥收縮性能有顯著的抑制作用；通過對工藝參數的研究，結合實際生產普遍存在的問題，選取了hf - 1100系列全自動液壓墻體磚壓機，有效地解決了傳統制磚過程中常見的成型壓力低、生產效率低、產品合格率低（即「三低」現象）等問題。This paper analyzes the driving mechanism and motion realization of underwater gliders, presents the simulation result of its typical motion modes, then describes the overall arrangement of an underwater glider test model being designed, and finally discusses the design and selection of the glider ' s buoyancy adjusting mechanism, pitch adjusting mechanism and roll adjusting mechanism in detail
分析了水下滑翔機器人的驅動機理和運動實現，給出了水下滑翔機器人典型運動的模擬結果，並以正在設計的一水下滑翔機試驗樣機為研究對象，描述了樣機的整體結構布局，詳細研究了浮力調節機構、俯仰調節機構和橫滾調節機構的實現方法，並就樣機中各執行機構的設計實現進行了論述。The research aims at the demonstration and the mend of the design on the new purifier and presents a calculation method for solving the two - phase flow in fluid machine by the finite element method. after analyzing the two - phase flow in the new purifier by means of the continuum model, poisson equation, navier - stokes equation and continuous equation are derived and solved by using the finite element method. the solution on pressure, velocity and particle concentration simulates the departure well between oil and water, which proves the accuracy of the design on the new purifier
本文採用兩相流連續介質模型，由兩相分離流動理論得到控制方程，採用chorin的直接速度-壓力mac法的思路，對新型油水分離裝置內油水兩相流動作了細致的分析，同時首次把科氏慣性力引入兩相流模型中，進行分析和計算，將研究擴展到三維，並用有限元法分別解poisson方程、 n - s方程、連續方程的方法，對流場內壓力場、速度場、濃度場進行了分析和計算，較好地模擬了新型油水分離裝置內油水分離的現象，證明了設計方案的正確性。The main ways of growth is imitating, self - exploring and self - summarizing, through these ways, they accumulate some experience of preschool education, but there is clearly shortcomings in those experience : ( 1 ) educating method is simple, that is to say, the ways of interaction between teacher and children is only language, the objects of interaction is only between teacher and children, the background of interaction is in collective activities, the means of interaction is only in classroom and collective activities directed by teacher. ( 2 ) paying specially attention to teaching knowledge and ignoring play, also paying specially attention to result but not the course of study, all that make kindergarten have the tendency to primary school in teaching style. ( 3 ) the basic educational quality of these teachers is at a low level, e. g
研究發現：一、貧困民族地區民辦回族幼兒教師在成長中以愛心為基點，充分發揮了奉獻、吃苦耐勞的職業品質，成為她們成長的內在動力；二、被研究教師在實踐中通過模仿、自我探索、自我總結的主要途徑，積累了一定的教育經驗，但也存在明顯的不足； （一）教育方式方法單一，即相互作用的手段僅限於言語傳授；相互作用的對象僅限於教師和幼兒之間；相互作用背景僅限於班級集體活動中；相互作用的途徑僅限於作業課和教師指導的集體活動中； （二）重知識傳遞、輕游戲活動，重教育結果輕活動過程，小學化傾向嚴重； （三）教師基本教育素質偏低，表現在文化知識水平低下，專業技能技巧缺乏，不能滿足幼兒全面發展的需求。In this paper, high heat penetration into a moving particulate bed is described mathematically with a comprehensive heat and mass transfer model. the distribution of gas velocity and pressure, the temperature field of gas and solid in the moving particulate bed are examined for different conditions. the results show that thermal penetration into the moving packed - bed particles by fluid flow in porous media is high only in the position near the gas entrance. the thermal penetration thickness tends to increase with the fluid flow velocity and decrease with the particle moving velocity. in the region of thermal penetration, the porosity of solid bed has significant effect on gas field and pressure loss. it is feasible to reduce the gas pressure loss by a larger width / height packed bed in design and operation. the correspondence between thermal infection depth and particle bed height would be helpful to keep high oapacity of reactor and reduce the cost of operation
針對移動顆粒床中物料層內的高溫氣體滲流傳熱現象，考慮滲流與傳熱的相互作用，採用局部非熱平衡假設建立了多孔介質滲流傳熱物理數學模型並進行了數值計算.研究了不同情況下床內填充多孔介質中的流速、氣固溫度和床層壓力損失.計算結果表明，高溫熱氣對移動床顆粒料層的熱滲透主要發生在滲流入口端區域，增大入口滲流速度以及減小床層物料下移速度將導致物料溫度沿床高慢速下降，熱滲透深度擴大，熱滲透作用區域內的物料溫度水平提高.在熱滲透作用區域，孔隙率對流場和壓力損失有很大的影響.研究結果對于移動顆粒床反應器的設計與運行具有一定的參考作用This paper, on the basis of the theory of aeroelasticity, analysed the galloping phenomenon which the cord was undergone the excitation of the horizontal wind. and also built up the mechanic model when galloping. this model provided the theoretical foundation for the case that the cord begins violently vibrating just after the speed of the horizontal wind reaches a certain level
以氣動彈性力學理論為基礎，分析了懸索在受到水平方向橫風激勵時的馳振現象，並建立了其發生馳振時的力學模型，該模型為懸索在橫風速度達到一定數值時發生激烈的振動提供了理論依據。In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source
摘要基於李家峽水電站雙排機組振動的現場試驗研究，並且針對傳統頻譜分析方法傅立葉變換（ fft ）對于非平穩信號已力不從心這一缺陷，利用小波分析方法在時域和頻域上同時具有良好的局部化性質，通過對開停機這一典型非平穩過程信號進行小波及小波包分析，將其分解到不同頻帶內，獲取微弱信息和提取優勢頻率，並對其作振源分析，得出開停機初始時刻因水流不穩均出現強烈的振動現象，且低頻段信號能量最大，開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。At last, we have some advises about how to bellowing human capital gini coefficient : region a should let the high rank human capital to flow out, cultivate the middle rank human capital, support and ensure the low rank human capital and make the structure of college education more rational. region b should reduce human capital gini coefficient basing on improving the level of people been educated. region c should strengthen the support of nine years duty education, develop the career technique education and whole life education, reduce the human capital being
最後，本文對不同區域分別提出了減小其人力資本基尼系數的建議:區域a應該積極引導高層次人力資本的向外流動，繼續堅實中等人力資本的培養，對低層次人力資本應給予有力的支持與保障，同時注意高校安排教育結構的合理性;區域b應該在普遍提高全民受教育水平的基礎上逐步縮小人力資本基尼系數;區域c應加強政府對普九工作的支持力度，注意發展職業技術教育和終生教育的教育系統以及減緩該區域的人才流失現象。The high p / e ratio has confused the financial order, has strengthened financial risks, hinder the growth of the real economy, not benefit the forming of correct investment concept, encourage behavior of speculating, cause inefficient distribution full play of function. we can reduce the high p / e ratio, suppress the p / e ratio to increase, by improving the management level, perfecting stock right structure and administration structure of the listed company, strengthening supervision of the listed company, stopping up all sorts of abnormal behavior of the stock market, perfecting the stock market system, trying one ' s best to reduce the government ' s intervention, changing means of the government interfere etc. then the china stock market can get lasting, healthy development
解決好我國股市市盈率過高的現象，可以從以下幾方面著手提高上市公司的經營水平，增強其盈利能力是降低股票市場市盈率的跟本；完善上市公司的股權結構，解決中國上市公司「一股獨大」的問題；要完善上市公司的治理結構，健全董事會制度是核心，發揮監事會職能實現權力制衡，構造適合中國國情的監督機關，對經營者激勵與約束同等重要，強化經營者的激勵和約束，讓利益相關者行動起來；加強監管，堵絕股票市場的種種不規范現象，對莊家的運作強化監管，對其違法違規行為加大懲治力度是促使中國股市持續、穩健發展所採取的必要措施；同時完善股票市場的制度建設，完善的退市機制，盡早推出確實可行的股票價格指數期貨市場；盡量減少政府的干預，轉變干預手段等。Including actuality evaluation, environmental identification analysis, dynamic harmonious analysis, dynamic simulation analysis and policy decision putting into optimization scheme. the results showed as follows. 1, in the current agricultural production structure, output value of animal husbandry and crop planting occupy 93. 4 % of agricultural total output value, and forestry and fishery do not get fully reasonably develop ; the wild economic vegetables and fruits resources and water resources etc, are the superiority environment factors of agriculture development of this area, and the slope farmland and service system etc, are limited environment factors, and the science - technology and labor quality etc, are potential environment factors ; there exists some problems in the agricultural production system, for example, single productive constitution do n ' t correspond with varieties of resources, rich plant resources exploitation scarcity and economical crop development lag
本文選擇四川盆周山區這一特定地貌區域作為研究對象，以滎經縣為代表研究了該區農業生產結構的優化調整，包括農業生產系統的現有結構評價、環境辨識分析、動態協調分析、動態模擬評價分析和實施優化方案的決策建議，結果表明： 1 、滎經現有結構為以畜牧業和種植業並重的豬糧為主的農業生產結構，二者產值占農業總產值的93 . 4 ，林業、漁業未得到充分合理發展；野生經濟菜果資源、水資源等為該區農業發展的優勢環境因子，坡耕地、服務體系等為限制環境因子，科技、勞動力素質等為潛力環境因子；同時該區農業生產系統存在著生產結構的單一性與資源多樣性的利用不協調、豐富的植物資源開發不足、經濟作物發展滯后等問題。Both tidal mixing and wind stirring can weaken the vertical stratification induced by freshwater buoyancy, but different mechanisms dominate such a process : tidal mixing is accomplished through the upward dissipation of turbulent kinetic energy whereas wind stirring is in the opposite direction
盡管潮汐混合和風的攪動作用均能削弱河流沖淡水浮力引起的垂直層化現象，但是其控制機制有所不同：潮汐混合是通過湍流動能自下向上的耗散來完成的，風攪動的方向恰好相反。In general, the upward amplitude curve " curvature is larger, and it changes quicker. on the contrary, the downward is smaller and slower ; because the flare force contains the square of the wave elevation velocity, it results in an difference between the flare force frequence and the associated moving frequence ; the flare force decreases the downward amplitude of heaving oscillations ; the speed of ship has an ignorant effect on the peak values of three calculated values, but there is an obvious effect on the oscillating frequence ; the wave amplitude has an effect on the ship motion, and there is an linear relation between the oscillating amplitude and the wave amplitude on the whole. by the way, there are some experiences and lessons according to the progress calculation : before the calculation of the ship motion, we should checkout the balance in a calm water firstly, namely, the whole displace of ship and the longitudinal position of the center of gravity must be consistent with the draft in calm water, or else, the calculation may show the " floating " phenomenon ; the mixed language programming has a lot of virtues, but it exists a fatal limitation - the debug of dll
研究表明：在某些頻率范圍內相關水動力系數基本不隨吃水變化，只有超過某一頻率后水動力系數的值才會出現差異；在橫搖方向，水動力系數並沒有隨著吃水的變化發生規則變化，而是出現了波動現象；近船首剖面的水動力系數計算表明，水動力系數的波動非常大，並遠遠偏離了平均位置的水動力系數值，值的變化速率也不盡相同，總的看來，上振幅曲線曲率較大，變化較快，下振幅曲線曲率較小，變化較慢；外飄力和波面運動的速度的平方項有關，導致其振動頻率和相應運動方向的頻率不同；外飄力使升沉向下運動的幅值減小；船速對三個計算量的峰值影響甚微，但對振動頻率有明顯影響；波幅對船舶運動的影響是明顯的，船舶運動的幅值基本上和波幅成線性關系。Because these harmful phenomena are closely related to the dynamic process of the flow, it is of great importance, theoretically and practically to the engineering design, to study the flow regime and predict the variations of flow velocity and pressure so that the hydrodynamic mechanism of cavitation and gate vibration could be analysed
由於這類有害現象的發生與水流的流動特性密切相關，探明閥門段水流急變分離的流態、預測流速、壓力時空變化規律，分析空化與振動的水動力學成因，在理論上和工程設計實踐上皆具有重要意義。At the same time, they also have the unstable phenomenon such as continually swinging, flapping and complicated hydraulic factors
但與此同時，此門型仍存在頻繁擺動、 「拍打」 、水力現象比較復雜等不穩定現象。分享友人