水流狀態 的英文怎麼說

中文拼音 [shuǐliúzhuàngtài]
水流狀態 英文
flow regime
  • : 名詞1 (由兩個氫原子和一個氧原子結合而成的液體) water 2 (河流) river 3 (指江、河、湖、海、洋...
  • : 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...
  • : Ⅰ名詞1 (形狀) form; shape 2 (情況) state; condition; situation; circumstances 3 (陳述事件或...
  • : 名詞1. (形狀; 狀態) form; condition; appearance 2. [物理學] (物質結構的狀態或階段) state 3. [語言學] (一種語法范疇) voice
  • 水流 : 1. (江河) rivers; streams; waters2. (流動的水) current; water flow; fluent; flow; [水文] stream current
  • 狀態 : status; state; condition; state of affairs: (病的)危險狀態 critical condition; 戰爭狀態 state o...
  1. In this dissertation, through computer simulation, the problems of modeling, control and guidance of auvs are presented. the first part of this dissertation addresses the problem of dynamically modeling of auvs, and derives thrusters " two - dimension nonlinear dynamic model, which has axial flow speed and propeller rotational velocity as two state variables, voltage or current of motor as inputs, and thruster force and torque as output. the second part focuses on the nonlinear adaptive sliding mode control of auvs in diving plane and steering plane

    本論文系統研究了自主式下航行器的建模、非線性自適應滑模控制、以及深度調整和平面導引方法等問題,具體成果和創新點如下1 、根據體力學理論,建立了螺旋槳推進器的動模型,它以螺旋槳來速度v _ p和螺旋槳轉速n為變量,以電機施加轉矩為輸入,螺旋槳推力t和轉矩q為輸出。
  2. The two - point to earth short fault may cause short currents whic h can lead to serious accident. so it is necessary to monitor the state of field windings of turbo - generator and detect the kind of fault and predict its inclination. thus the security level of power system will be improved

    由於發電機轉子兩點接地故障時會產生較大的短路電,導致惡性事故的發生,因此對發電機轉子繞組進行監測,判斷短路故障的形式和趨勢是十分必要,有助於提高系統安全運行平。
  3. The researches indicated : ( 1 ) the seepage flow field of infiltration diversion is characterized by three - dimensional, saturated and steady flow. there is the close hydraulic relationship between the river and the groundwater in the filtering bed, and the groundwater is confined

    研究表明: ( 1 )滲濾取的滲場具有典型的飽和三維穩定特徵;滲濾取濾床中地下與河力聯系比較緊密,濾床中的地下處于承壓
  4. Through the special studies on impacts to atomizing and humidifying effect from such factors as the firing pin type, centrifugal structure, higher spraying pressure, less aperture, initial water temperature and original state of the air, some conclusions are obtained, such as : the centrifugal nozzle with firing pin type, high pressure and little aperture has bigger air eddy and atomizing angle. the spaying liquid has high velocity. the droplet is small, and the heat and mass transfer velocity is high

    通過對撞針型結構、離心式結構、較高的噴壓力、較小的噴嘴孔徑、噴初溫及待加濕空氣初對霧化加濕效果的作用原理的重點分析,得到:撞針型高壓小孔徑離心式噴嘴具有較大的空氣渦與霧化角,噴出的液體速高、液滴小、與空氣傳熱傳質速率高,撞針型結構提高了霧化加濕效率,高壓小孔徑的特點為霧化加濕提供了較大的能量,而噴初溫的升高會減小的粘性力和表面張力,從而優化加濕效果。
  5. The forecast of moving distance of avalanche soils - the ratio of the heights of collapsed part and run - out of avalanche soils is related to slope shapes, avalanche sources, streamwise soil conditions, runoff on foreside, and soil moisture

    主要內容如下: ?崩塌土運動距離的預測?崩塌土高比與斜坡形、崩塌源土質及沿程土質條件、坡前徑及土層含等有關,並提出了崩塌土高比公式。
  6. In order to solve this problem, we find a kind of herbages plant - sabaigrass ( eulaliopsis binata ) which not only can accommodate the badly environment of purple soil but also have excellent water and soil conservation effect and good economic benefit. this study adopt quantitative and qualitative methods, through comparative study of four different utilization types : sabaigrass treatment, grass tree solid plating treatment ( planting sabaigrass under fruit trees treatment ), bare land treatment, natural wild grassland treatment, study water and soil conservation effect, soil water condition, soil constructors condition, soil fertility condition and soil surface temperature, then evaluated the water and soil conservation effect of plating sabaigrass in purple soil bare sloping field and probed into water and soil conservation mechanism. the main results are as follows : 1

    本研究針對湖南省衡邵盆地紫色巖地區日益惡劣的生環境,從紫色土荒坡地失治理入手,在尋求出既適應紫色土荒坡地惡劣環境又有良好土保持作用和一定經濟效應的作物? ?龍須草的基礎上,用定性和定量相結合的方法,以「龍須草純種」 、 「龍須草與果樹立體種植」 (簡稱林草立體種植,下同) 、 「空曠地」 、 「自然野生雜草地」四種不同的土地利用方式進行對比研究,從土保持效應、土壤況、土壤結構、土壤肥力況、地表溫度況等方面分析、評價紫色土荒坡地種植龍須草防治失的效應,並對其機理進行了初步探討,主要研究結果如下: 1
  7. Therefore, it is the urgent need of land exploiture and environment repair that how to investigate the current situation of soil losses accurately, quickly and dynamically, how to predict & inspect soil losses, and provide scientific base for the repair of soil erosion and implement of soil and water conservation planning. otherwise, the survey method of soil losses is lagger in yunnan

    如何準確、快速、動地查清失現,進行失預報和動監測,為失治理和保規劃實施提供科學依據,是土地開發與環境整治的迫切需要,而雲南省在失調查方法方面恰恰處于相對落後
  8. Firstly, the status of our nation ' s water resources, flood and arid hazards is overviewed to illustrate the necessity for study on dynamic control of flood season limited water level. disadvantages in traditional limitsd water level design, static control of limited water level design, static control of limited water level and fuzzy limited water level curve are pointed out, and mending methods for these are introduced. dynamic control and its key problems are analyzed hi next section. the allowable range of limited water level is determined, so as the allowable extreme risk index. the definition of extreme risk is re - illustrated, risk analysis methods in reservoir operation is discussed either. according to the definition of extreme risk rate, the allowable extreme risk rate of reservoir is systematically demonstrated with variant extreme risk indexes and flood season limited water level

    本文首先闡述了我國資源況和旱災害、說明庫汛期限制位動控制研究的必要性;介紹了傳統汛限位設計、汛限位靜控制、模糊汛限位過程線存在的問題及其初步改進方法;分析汛期限制位動控制的方法及關鍵問題;進一步闡述了庫極限風險率的定義;根據極限風險率定義,詳細敘述了不同極限風險指標時、不同汛期限制位下起調,庫所能承受的極限風險率計算方法。然後,基於極限風險率計算方法,以白石庫為背景,研究「考慮壩體自身安全、考慮壩體安全與下游防護對象控制下泄量的汛限位動控制的極限風險率」 。
  9. The lipoid in the fishes brain had been viscid when the temperature at 17. and become more solid with the temprature went dowra unceasingly

    從解剖中看到,當溫度下降到17時,淡白娼的腦腔內脂類呈半,隨著溫度的下降滯現象更為嚴重。
  10. The hyperbolic conservation laws with relaxation appear in many physical systems such as nonequilibrium gas dynamics, flood flow with friction, magnetohydrodynamics, etc. firstly, the thesis proves that there exists a unique global smooth solution for the cauthy problem to the hyperbolic conservation laws system with relaxation ; secondly, in the large time station, the thesis proves that the global smooth solutions of the hyperbolic conservation laws system with relaxation converge to rarefaction waves solution at a determined l ( p > 2 ) decay rate

    帶鬆弛項的雙曲型守恆律組出現在諸多的物理系統中。例如,非平衡的氣體動力學、帶摩擦的、磁動力學等。本文首先證明,帶鬆弛項的雙曲型守恆律組的柯西問題的整體光滑解的存在唯一性;其二,證明了帶鬆弛項的雙曲型守恆律組的解與相應的平衡守恆律的稀疏波解在大時間下的l ~ p衰減率。
  11. According to the hydraulic property of overflow weirs under steady flow, the flow patterns of overflow weirs were classified into free overfall and submerged overfall, and numerical models for unsteady flow were established to simulate the two flow patterns respectively

    摘要為了對保堰的交替進行數值模擬,依據保堰恆定情況下的工作特性,將保堰的分成堰和滿兩種,分別建立保堰不同下的非恆定數學模型。
  12. The hydraulic gradients of settling slurry flow transported in three kinds of moving states, i. e. suspension, saltation, or partially suspension were investigated, based on analyzing the changes of solid particles and water in momentum, velocity and their mass related to momentum exchanging over the acceleration period of the solid particles

    從固體顆粒加速期間清與固體顆粒的速度變化、動量傳遞、相關質量等基本問題分析入手,研究了沉降性漿體在平管道內動時其固體顆粒在3種下的力坡度,提出了沉降性漿體在平管道內動的機理模型,進而用該模型對一些輸送條件下的沉降性漿體的力坡度進行了計算。
  13. When soil antecedent condition is dry and the initial rainfall intensity is high, peak surface runoff also considerably lag behind that of rainfall, because of the formation of temporary relative impermeable top layer ; b ) surface runoff is controlled primarily by infiltration - excess runoff mechanism under unsaturated condition ; the major fraction of surface runoff are dominated by saturated infiltration - excess runoff response, only a small fraction by return flow mechanism when soil is saturated ; c ) subsurface flow is dominated by saturated runoff mechanism, and the duration of subsurface post the rainfall end is dependent upon rather the soil properties than the rainfall characteristics ; d ) subsurface flow intensity in cultivated soil layer ( 0 ~ 20cm ) is high up to 35mm / h when rainfall intensity is up to 120mm / h, indicating the existing of macropores and pipe flow in cultivated layer

    2 )耕作制下紫色土的產主要機制是: 1 )當雨前土壤含量未達到飽和時,表面產起始時間有明顯滯后現象,這與紫色土的快吸性和較多非毛管孔隙密切相關;當雨前土壤較乾燥,降雨初期雨強較大時,易形成臨時相對不透表層,表面產峰也有明顯滯后現象。 2 )表面徑的產方式主要是超滲產,當土壤達到飽和后,有四川大學博士學位論文小部分回歸發生,但主要是飽和超滲產發生,因為紫色土的相對不透層和其它透障礙層不明顯。 3 )壤中主要是飽和產,與降雨過程有明顯的滯后,而且雨停后的壤中歷時與降雨特徵無關。
  14. The three - dimensional primitive equations were derived for ocean in the condition of turbulence, by using the reynods time average method

    首先在體動力學和熱動力學的基礎上,應用雷諾時均方程法,詳細推導得到海在湍下的三維原始方程。
  15. In the turbulent flow, the fluid ’ s physical parameters has the stochastic change along with the time and the space, it is very difficult to carries on its rate process ’ s precise computation and the simulation with mathematics method, but unstable condition navier - stokes equation regarding open canal current of water transient motion suitable

    閘后經過加糙的海漫段時,其水流狀態屬明渠紊體中的各種物理參數,都隨時間與空間發生隨機的變化,很難用數學的方法對其運動過程進行精確計算和模擬。
  16. This paper discussed the modality of ringed piping in the procedure of fire fighting

    討論了消防過程中環管網中的水流狀態
  17. According to the hourly water demand forecasting results of hangzhou city, the reasonability and effectiveness of this model was proved. real large water supply system is a complicatedly dynamic nonlinear system, it is influenced by many factors, and these factors are interactional. it is difficult to simulate water distribution networks by using one or several explicit functions

    由於實際大型供系統是非常復雜的動非線性系統,在實際管網的運行中,受到多因素的制約和影響,各綜合因素作用疊加起來造成水流狀態極其復雜,使得很難以一個或幾個統一的顯式函數關系描述管網的工況。
  18. The result shows that the heat transfer coefficient within the hollow fiber module with laminar flow can be calculated based on the correlation. by analyzing the equation, it was founded that the heat transfer coefficient under laminar flow is almost independent of the feed flow rate. numerical simulation of temperature distribution in hollow fiber membrane module with laminar flow was carried out

    首先採用純為研究體系,研究分析了中空纖維管內的傳熱系數,研究表明,纖維管內的動屬于層,其邊界層傳熱系數可用關聯式來計算,由此式看出,層下,速對傳熱系數的影響很小。
  19. As the pressure on diaphragm ( 8 ) approaches a balance with the force exerted by adjusting spring ( 5 ), disc ( 20 ) is throttled to a position where just enough water flows to maintain the set delivery pressure

    當隔膜( 8 )上的壓力接近等於調節彈簧( 5 )的彈簧力時,閥瓣( 20 )就進行節,使得剛好有足夠的來保持設置的輸出壓力。
  20. The thesis also introduces the virtual instrument ’ s concept, system architecture, etc. the development of virtual instrument ’ s application software is discussed in detail. it includes virtual instrument software architecture ( visa ), and virtual instrument ’ s software platforms. the thesis discusses the principle and mechanism of work of the simulation of embedded system. by comparing with the principle of traditional logical analyzer, it draw a conclusion that the virtual logical analyzer will work in synchronous way when it is used for both logical state analyzer and logical time analyzer. the thesis

    論文接著探討了嵌入式模擬平臺的原理和工作機制,通過與傳統邏輯分析儀原理的比較,得出了嵌入式模擬平臺下邏輯分析儀無論是做定時分析,還是做分析都工作在同步方式下;並重點剖析了探頭原理,采樣定理和毛刺,數據的建立和保持時間等邏輯分析儀的重要技術指標,得出了虛擬環境對虛擬邏輯分析儀的功能和各項技術指標的影響,還提出了表的思想和實現機制。
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