geometry parameters 中文意思是什麼
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Later it was taken that the optimized design for geometry parameters of longitudinal and transverse array ulpa wedges, and the principles for the optimized design of wedges " angles and the distance from piezocrystal center along wedge surface to test surface were deduced
隨后進行了縱向和橫向兩種線陣楔塊的幾何優化設計，推導出楔塊角度以及晶片中心沿楔塊表而到探測而距離的優化設計原則。 -
First, it was taken that a discuss about the effects of geometry parameters of each piezocrystal on direction parameters ( main lobe width, side lobe amplitude, elimination of grating lobes ), amplitude of ultrasonic pressure, element viberation pattern, mutual radiation among elements, efficient test regions, ability to keep accurate and near - field distance and so on. based on the direction of ultrasonic field in ulpa deduced by ourselves. in addition, on the base of integrating all kinds of factors, it was put forward that the principle and method for optimized design of geometry parameters of piezocrystals in ulpa transducer, and its design programme and interface were compiled
首先在推導超聲相控線陣換能器聲場的指向性的基礎上，就各個晶片幾何參數對指向性指標（主瓣寬度、旁瓣幅度、消除柵瓣） 、聲壓幅值、陣元振動模式、陣元間互輻射、有效檢測區域、精確控制能力、近場長度等方面的影響進行了論述，並在綜合各方面影響的基礎上，提出了晶片幾何參數優化設計的原則和方法，編寫了設計程序和界面。 -
The thermal visualizations of jet impingement cooling with single or double row holes inside semi - enclosed channel are measured by using infrared camera and then the impingement cooling heat transfer coefficients are deduced. the effects of flow and geometry parameters on convective heat coefficients are obtained. the results show that : for a single row normal impingement, the impingement cooling effectiveness is enhanced with the increase of impinging reynolds number or the decrease of hole space to diameter ratio, and the best effectiveness is achieved under the jet - to - surface spacing equals to 2 ; when the jet is oblique to the confined wall, the cooling effectiveness is weaken especially under the jet - to - surface spacing ratio is greater than 2 ; for double rows normal impingement cooling, the cooling effectiveness of rear row jet is weaker than the front row under lower impinging reynolds number or bigger jet - to - surface spacing
對于單排垂直射流，沖擊冷卻效果隨射流雷諾數的增加、孔間距與直徑比的減小而得到提高，沖擊間距比為2時換熱效果最好;沖擊孔中心線向通道封閉一側傾斜后，射流沖擊冷卻的范圍變窄，當沖擊間距比大於2時駐點區的對流換熱能力明顯降低;對于雙排沖擊射流，孔排間距與直徑比的增加使沖擊冷卻范圍變大，但在兩排孔之間區域的對流換熱系數有所下降;在較小的沖擊射流雷諾數和較大的沖擊間距比下，後排射流的沖擊換熱效果要遜於前排射流。 -
Then the thermal visualizations of jet impingement cooling with single or double row holes inside semi - enclosed ribbed channel are measured by using infrared camera and the effects of flow and geometry parameters on convective heat coefficients are obtained. the results show that : the impingement cooling effectiveness of ribbed surface is affected greatly by the jet - to - surface spacing, and the best effectiveness is achieved under the jet - to - surface spacing equals to 1. the correlation formulas of impingement heat transfer characteristics to the parameters are finally concluded and in good agree with the experiment data
最後，對單排、雙排沖擊孔試驗板在半封閉通道展開了流量系數的研究，在變化各種幾何因素及流動因素的情況下由實驗得出了沖擊孔流量系數值，討論並分析了各種因素對流量系數的影響程度，建立了沖擊孔流量系數的準則關系式，與實驗結果對比表明:該準則關系式與實驗實測數據吻合較好，精度較高，有較高的工程應用價值。 -
The bulk of effect on dredging river for deposition reduction is relative to chosen datum of dredging channel geometry parameter. geometry parameters include dredging channel length, morphology of transversal section and longitudinal slopes
挖河減淤效果的大小與挖槽幾何參數的選值有關，幾何參數包括挖河長度、斷面形態及挖槽比降等。 -
Influence of starting notch geometry parameters of connecting rod on its fracture splitting force
連桿預制裂紋槽幾何參數對脹裂力的影響 -
Based on energy theory, wrinkling criterion in deep drawing for axisymmetric parts is derived to take geometry parameters, friction coefficient, material properties, and the law of critical blank - holder force ( bhf ) of side wall wrinkling in the constraint condition of initial wrinkling into account
從能量平衡原理出發，通過對屈服準則的線性化處理，推導了考慮幾何參數、摩擦系數和材料性能參數、板材皺曲時約束條件的軸對稱拉深成形過程中側壁起皺臨界壓邊力的變化規律，給出了皺曲判據。 -
2 ) the inductance transducer used to identify large wear particle is developed. the analytical theory of wear particle and detection windings are expatiated and inner magnetic distribution of inductance transducer is discussed, the geometry parameters are optimized by using genetic algorithm, and the finite element analysis method is used in the designing
2 ）研製了識別大磨損顆粒的材質和測定其粒度的電感傳感器，闡述了磨損顆粒與檢測線圈的解析關系，探討了傳感器的理論基礎，分析了電感式檢測傳感器內部的磁場分佈，並應用遺傳演算法優化了傳感器幾何參數，最後進行了有限元模擬分析。 -
The main achievements are as follows : the theory models of defect mfl field are set up ; based on the magnetic dipole model and finite element model, the distribution of defect mfl field is simulated in the dissertation ; the component of flux density ( magnetic filed ) parallel to the surface of pipe is detected by a circumferential array of hall probes ; the factors including defect geometry parameters, defect surface angle and shape, pipe material, field intensity, vehicle velocity, background magnetization, operating pressure and remanent magnetization and so on influence the mfl signal characteristics
採用霍爾元件作為缺陷漏磁檢測傳感器，獲得管道軸截面漏磁場切向分量的漏磁信號；研究了缺陷外形尺寸、缺陷傾角和形狀、管道材質和磁化強度、檢測儀移動速度、管道背底磁場、管內壓力和剩磁對漏磁信號的影響。提出了各通道增益放大、各路漏磁信號偏離調整、波形微分、數字濾波和平滑等漏磁信號預處理方法；分析了等空間采樣的漏磁信號轉換為等時間采樣信號的必要性，研究了漏磁信號的小波去噪方法。 -
To reduce the number of design variables, the sensitivity of both natural frequency and mode shape vector to component geometry parameters were derived respectively
為優選設計變量，分別推導了固有頻率和振型矢量對其幾何參數的靈敏度公式。 -
Effects of geometry parameters of microfin tubes on flow boiling of refrigerant mixtures
微翅管幾何參數對混合工質流動沸騰特性的影響 -
Patterns which are based on experience and experiment and wasteful in time, nonguarantecable in quality. high production efficiently is then achieved. and the same time, this paper puts forward a relative control system, changes and realizes the adjustment of spinning speed and the fixed increasing the technology and application of stone balls, yielding better economic efficienly. in the end of this paper, there is an appendix of computation program edited by c language, the geometry parameters of stone balls
同時通過恆定總流的能量方程和動量矩方程，確定了風水球轉速的計算方法，建立了相應的控制系統，改變了過去風水球轉速、轉向固定不變的狀況，實現了對轉速轉向的調節，設計了轉向控制系統和轉速控制系統，提高了風水球的技術含量和可觀賞性，從而獲得更好的經濟效益。 -
Research on geometry parameters of relativistic travelling wave tube slow wave structure
相對論行波管慢波結構幾何參數研究 -
The research of the effect of soi s - resurf included the impact of the geometry parameters and drift doping concentration on breakdown voltage and on - resistance
Soisingle - resurf效應研究。研究了soisingle - resurfldmos的器件參數對擊穿電壓和導通電阻的影響。 -
The effect of geometry parameters on the separation performance of dewatering hydrocyclones
結構參數對油脫水型旋流器分離性能的影響 -
Artifical neural networks are employed for defect accurate recognition and calculation, the traditional bp neural network and wavelet basis function neural networks can successfully predict or estimate defect shape and geometry parameters, their application to the magnetic flux leakage inspection is put forward at first
將神經網路模式識別方法應用到缺陷漏磁檢測中來，提出了用bp網路和小波神經網路對缺陷進行定量識別，精度高、效果好。 -
In microfluidics systems, many parameters influence on the flow moving and control, for examples, microchannel surface characters, section shape. in this paper the main work is the research on the mechanism forming electroosmoticflow, theory analysis and simulation on the influence of the geometry parameters on the microflow. this paper reviews the development history of dc electroosmotic micropump and introduces the principle of electric double layer and dc electroosmotic micropump
在微流控系統中微通道的表面特性、截面形狀等都會對電滲流流體的流動和控制產生影響，因此本文的主要工作內容就是對電滲流的產生機理進行研究和對微通道的幾何參數對其中的流體的流動狀況的影響進行分析。 -
Geometry parameters of piezocrystals and wedges in ultrasonic line phased arrays transducer ( ulpa ) have important effects on transducers performance. so far, there havent been issued papers about optimized design for geometry parameters of piezocrystals and wedges based on considering all kinds of factors
超聲相控線陣換能器晶片和楔塊的幾何參數對換能器性能的影響很大，迄今為止，尚未見在綜合考慮各方面因素的基礎上提出晶片和楔塊幾何優化設計方法的報道。 -
Therefore, a primary research and discuss on optimized design for geometry parameters of piezocrystals and wedges in ulpa were taken in this study
因此本研究從晶片和楔塊兩方面對超聲相控線陣換能器的幾何優化設計進行了初步研究和探討。 -
Abstract : to campare the result of vehicle static parameters test with that of car dynamics test, analyze the influence of the vehicle geometry parameters and suspension parameters to the runnig stability of railway vehicle on the straight line
文摘:通過車輛靜態參數測試結果與動力學試驗結果進行比較，分析研究車輛幾何參數與懸掛參數對列車直線段運行穩定性的影響。
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