head velocity 中文意思是什麼
head velocity
解釋
頂端速度-
The additional flow is formed by the device of dentoid baffle, and the application of the device of dentoid baffle cooperated with a stilling basin has been investigated by systematic model tests. based on the research results, the hydraulic problems such as the characteristics of hydrodynamic pressure and cavitation on the head of the denotid baffle, the properties of flow under the condition that the device of denotid baffle is used with a stilling basin, the hydraulic computation about a stilling basin, the estimation of energy dissipation and its various affection factors, the mechanism and effect of energy dissipation, and distributions of velocity and pressure and aerating concentration, etc, have been analyzed ; the method and step of hydraulic design of device of denotid baffle by which the additional flow is produced has also been proposed
文中利用齒墩設施實現附加射流，對齒墩設施與消力池聯合應用進行了大量的和系統的模型試驗，分析研究了中低佛勞德數條件下，齒墩墩頭的動水壓強及空化特性，齒墩設施與消力池聯合應用時的流態特性，消力池的水力計算，消能量的估算及其各種影響因素，消能機理和效果，消力池內的流速、壓強特性，摻氣濃度分佈等水力學問題，並提出了實現附加射流齒墩設施的水力設計方法和步驟。 -
The impacts of both the velocity head and momentum distribution in the t - junction of a tailrace surge tank on the critical stable sectional area of the tank were analyzed by using gardel ' s empirical equations for t - junction flow. based on thoma ' s theory, a formula of the critical stable sectional area is derived. 5
基於gardel關於三通管水頭損失的經驗公式，研究分析了連接管處的速度水頭以及進出調壓室水體與尾水隧洞水體之間的動量交換，對有連接管的尾水調壓室穩定斷面積的影響，並在托馬（ thoma ）假定基礎上，推導出相應的調壓室穩定斷面的計算公式； 5 -
In this paper, firstly the macro parameter of the series connection app was comprehensively analyzed, among which the trajectory location of the bullet emission and the terminal velocity of the bullet were mainly analyzed, and the feasibility of the series connection app to cope with explosive reactive armor was demonstrated. and then the macro design about the head of the series connection app was made, among which a particular analyse about the bullet " s launching process was made, from which we concluded the relation between the thickness of the airproof loop and the velocity of the bullet detached from the carrier and the relation between the length of the bullet and the velocity of the bullet detached from the carrier and the relation between the length of the bullet and the burning rate of the powder and the relation between the length of the bullet and the maximum pressure of the emission hole and the relation between the length of the bullet and the emitting time of the bullet, and the reasonable str ucture of the head of the carrier and bullet were designed, then the intensity of the head of the carrier was checked out using of the software of ansys
本文首先對子母式穿甲彈總體參量作了全面的計算分析，其中主要分析了子彈射出的彈道位置和必要的子彈著靶速度，論證了子母式穿甲彈對付爆炸式反應裝甲的可行性，然後對子母式穿甲彈彈頭部進行了總體設計，其中主要對子彈的發射過程進行了詳細的分析，得出了母彈彈頭部發射孔內閉鎖環厚度與子彈飛離母彈速度的關系、子彈長度與子彈飛離母彈速度的關系、子彈長度與火藥燃燒率的關系、子彈長度與母彈彈頭部發射孔內最大壓力的關系以及子彈的長度與子彈發射所需時間的關系，設計出了合理的母彈彈頭部結構和子彈的結構，並利用ansys有限元分析軟體對母彈彈頭部的強度進行了校核。 -
In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively
本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。 -
The innovations of this thesis can be summarized into three points. firstly, the average relative velocity is introducd into a novel adptive weighted clustering algorithm as one important parameter of weight, then it increases the stability and self - adaptability of cluster head. secondly, a new approach to calculating weight is suggested by integrating subjective and objective factors. it is verified by comparison with other approaches to selecting weight. thus the velocity of weight responding to the changes of network topology is increased. finally, using a som neural network to create a classifying model enables every node to learn to identify by itself the role in manet
本文的創新點有三個:首先本文在wca和aow分簇演算法的基礎上，引入了平均相對移動速度作為權值重要的參數，提出了一種新的基於權值的自適應分簇演算法，提高了簇頭在移動中的穩定性和自適應性;其次，提出了利用主客觀綜合賦權法確定權重的權值計算方法，通過與其他權重選擇方法比較，網路結構變化的權值響應速度得到了改進;最後，論文利用自組織特徵映射神經網路建立分類模型，使得網路中的節點可以自學習地確定簇中角色。 -
This paper analyzes the characteristics of rainfield and raindrops, gives - formulae to calculate falling velocity of raindrops, studies the frequency of raindrops hitting detonating area of fuzes head on ballistic trajectory based on the theory of exterior ballistics and uses statistical theory to study methods of rainfield simulation
本文分析了雨場和雨滴的各種特性，給出了雨滴降落速度的計算公式，利用外彈道學的理論研究了引信頭部觸發區在彈道上與雨滴碰撞的頻率，同時還採用統計學手段對雨場模擬的方法進行了研究。 -
Preliminary conclusions are got through the analysis of the experimental data such as effect of the ice velocity on the ice force, ratio of components of forces when ice sheet acting on the vertical bank - head, ice force ratio of vertical to 45 incline as well as ratio of level ice force to the vertical ice force when acting on 45 incline
對試驗數據諸如冰速對冰力的影響、冰排作用於垂直面堤頭時各向分力的關系比、垂直面與45斜面冰力關系比以及作用於45斜面時其水平與垂直冰力的關系比等進行了分析，並得到初步結論。 -
Research methods and experimental designs for study of air temperature field and velocity field in front of wildfire head
地表火火頭前方氣流溫度場和速度場的研究方法和實驗設計 -
In the full of research, the thesis constructed the dynamic equations of the simplified model, then programmed and computed the feedback gains using lqr method. moreover, the thesis plotted pictures of displacement, velocity, acceleration, bend and shearing force of ship ' s head and middle part in the condition of using cable and not using cable
在研究工作中，首先對船舶的簡化模型建立了動力學方程，然後採用線性二次型最優控制方法，編寫程序並計算出船體垂向振動固有頻率和最優反饋矩陣，得到控制前後船艏以及船舯部的位移、速度、加速度、彎矩和剪力歷程圖。 -
The target in orbit was heading south, so the intercept involved an extremely high - velocity, nearly head - on collision, sources said
軌道上的目標正向南飛行，因此導致攔截完全是高速的、幾乎迎頭相撞的。 -
The pate rubs pinches massages the head, revolves the massage through the pro and con two directions, the waist, the back is equipped with four turn walks the organization, two widths, two narrowly roll the massage wheel, can tightly paste your waist back about, does according to the lumbodorsal region curve walks the massage, depend the mat. the beginnings and ends are equipped with the remote infrared ray pad wave system, can cause the heat wave infrared thorough human body cell in - depth to nurse, the cushion thigh department is equipped with two thumps to strike to be possible to choose the rap, to inspire trembles, whips three massages techniques, the calf pad supposes one may modulate velocity the hoop organization
頸部揉捏按摩頭，通過正反二個方向的旋轉按摩，腰、背部設有四輪行走機構，兩寬、兩窄滾動的按摩輪，能緊貼您的腰背部，根據腰背曲線作上下行走按摩，靠墊兩端設有遠紅外線墊波系統，能使熱波紅外線深入人體細胞深層護理，坐墊大腿部設有兩捶擊頭可選擇敲擊、振顫、拍打三種按摩手法，小腿墊設一可調速滾輪機構。 -
Higher - velocity and head - on collisions are the best at converting kinetic energy into heat and pressure, making for a total wreck
高速及正面相撞最能將動能轉換成熱與壓力，因而造成兩車全毀。 -
The horizontal swirling flow internal dissipater tunnel being built in gongboxia power station will be the first one reconstructed from a diversion tunnel whose discharge reaches to 1000m vs and water head is more than 100m in china. its scheme ' s argumentation, test research and future apply will have important meanings to the design. research and engineering application of internal dissipation discharge tunnel with swirling flow, will powerfully promote engineering application of this new kind of dissipation mode, which may solve some high velocity problems in high dam construction and provide a engineering example for technological and economical augmentation in a diversion tunnel reconstruction. it is of theoretical and practical importance to promote hydraulic structure researches and development
公伯峽水電站右岸旋流內消能泄洪洞是國內第一個泄量達1000m s 、水頭超過100m ，即將修建的旋流式內消能泄洪洞，其方案的論證與試驗研究以及建成后投入使用，將在國內外旋流式內消能泄洪洞設計、研究與工程應用中具有重要的意義，將有力的推動這一新的消能形式在工程中的應用，從而為解決高壩建設中泄水建築物的高速水流問題與導流洞改建的技術與經濟問題提供工程實例，對推動與發展水工水力學的研究與發展均具有重要的理論與實踐意義。 -
In the forth chapter, the performances of mr dampers designed and fabricated at chongqing university have been tested in national center for test and supervision of coach quality, including schematics of damping force vs. displacement of piston head, damping force vs. velocity of piston head, etc. for some given electric currents of the coil. the experimental results demonstrate that damping force offered by mr damper consists of background damping generated by resistance of mr fluid and damping caused by magnetic field
對不同勵磁電流條件下的理論阻尼力與測試阻尼力進行了比較，分析了產生誤差的主要原因；對阻尼器產生溫度效應產生的主要原因進行了分析，提出了應該提高磁流變體的溫度穩定性；推導了磁流變體的感性和容性流動方程，從理論上分析了磁流變體的感性和容性對阻尼器特性的影響。 -
( 2 ) feclsused as a coagulant when the water quality after filtration has tiny difference in the direct filtration process, compared with the finer sand media, the velocity increase of the water head loss of the coarser sand media is slower, and its filtration cycle is longer
（ 2 ）在直接過濾過程中，採用fecl _ 3作為混凝劑、出水濁度保持基本相同時，粗濾料的水頭損失增長速度較慢，過濾周期比較長。 （ 3 ） -
The liquor is pumped through a large nozzle and the velocity head is utilized to draw the gases to be absorbed into the liquid.
液體用泵送經一隻大的噴頭，利用速度變化產生的壓差將待吸收氣體帶到液體中。 -
The model assumes that every vehicle tends to keep expected time - headway and each vehicle synchronously updates its velocity by estimating the velocity of the head vehicle, the distance headway and the probability of random slowdown
該模型假定行駛車輛都趨向于保持一個期望的車頭時距，通過對前車速度和車頭間距的估計，並考慮隨機減速的影響對車速進行同步更新。 -
It possesses the characters of high head, high velocity, long operation time and large variation range of water level
它具有水頭高、流速大、運行時間長、水位變幅大等特點。 -
With the consideration of the vertical wave effect of soil and soil - pile interaction, an approximate analytical solution to vertical vibration of pile system with variable impedance in visco - elastic layered soil is developed. a simplified and practical mathematical model for interaction between soil layers is proposed, and its applicability is theoretically investigated. based on this model and by using laplace transforms and the transmit property of impedance function, the analytical expression of the impedance function and solutions of the displacement and velocity response function in frequency domain and in time domain at the pile head are derived
4 、從三維軸對稱土模型出發，對考慮樁土耦合作用、土層層間聯系以及樁周土豎向應力梯度變化條件下的成層粘彈性土中完整樁及變阻抗樁系統縱向振動問題進行了研究，提出了成層土中變阻抗樁系統縱向振動問題的近似解析解法和樁周土層層間相互作用的簡化而實用的數學模型，並利用拉氏變換和阻抗函數的傳遞性，獲得了成層土中任意段變阻抗樁樁頂阻抗函數的解析表達式，以及樁頂速度導納和時域速度響應解析解和半解析解。 -
First, the complete machine is controlled by the germany siemens programmable local controller ( plc ). secondly, mitsubishi e - 540 variable frequency main shaft stepless speed regulation function is provided. thirdly, siemens chinese td - 200 text panel indicator is used for parameter set. the winding number, tension and velocity can be modifies at real time. in addition, the complete machine has high degree of automation. the work of filling in workpiece, clamping, moving workpiece to the winding position, winding, trimming and holding line head etc can be finished for one time
參數設定採用西門子中文td - 200文本面板顯示器，可對匝數繞線張力、繞線速度參數進行實時修改。整機自動化程度高。從工件放入工件夾緊送工件至繞線位繞線剪線並夾住線頭… …一次性完成。
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