non-uniform velocity 中文意思是什麼
non-uniform velocity
解釋
不等速度, 非均速-
Several key techniques of carving and milling machine cnc system are deeply studied they include : the transformation, data rebuild and interface design of huge volume nc program produced by cam ; the algorithm of cubic parametric spline pre _ interpolation and high speed real time interpolation in the cnc system, which. will gain a much higher surface precision and cutting speed ; methodology and algorithm of movement velocity acceleration control on a real time forecast _ and _ prejudge basis is designed. therefore, a smooth movement is insured. the shake and noise problem caused by non _ uniform pules for driving stepping or servo motor is solved by an improving algorithm to generate uniform pules
同時，本文對基於統一的pc平臺的雕銑機數控系統中的幾項關鍵技術進行了深入的研究，包括： cam生成加工程序的傳送、接收、讀取及其加工鏈表的生成和實時重構；對cam生成的離散數據進行三次參數樣條插值和基於累加弦長的三次參數樣條插補控制，保證加工工件表面的精度和光順性；設計具有「前瞻」功能的自動升降速控制方法，保證加工過程的平穩性；通過脈沖均勻化，有效地解決加工過程中因為脈沖不均勻而引起的震動問題。 -
Based on comparison of several technical schemes, the method of sand bedding pre - elevating and step water - filling pre - compressing is adopted. so the dissertation is consist of two parts : ( 1 ) the applicability study for the method of sand bedding pre - elevating and step water - filling pre - compressing, including numerical analyses for the thickness of sand bedding, the consolidation, settlement and stability of foundation, drainage, possibility of foundation liquefaction under seismic loading, et al. ( 2 ) monitoring at construction stage and checking the effect of foundation treatment, including the measurements of the settlement velocity and non - uniform settlement of ring beam under the tank, pore pressures and horizontal displacements in foundation, the pressure distribution at the bottom of oil tank and the strength increase of soils
通過多種技術方案比較，最終選擇了技術先進的砂墊層預抬高分級充水預壓法，論文工作主要由以下兩部分組成： （ 1 ）砂墊層預抬高分級充水預壓法的適用性研究，其中包括砂墊層厚度、地基沉降與固結度、地基穩定性、降水、地震作用下砂土液化的可能性等方面的計算分析； （ 2 ）施工監測與地基處理效果檢驗，其中包括油罐環梁基礎沉降速率與不均勻沉降程度、各分級充水加載階段地基超靜孔壓與深層水平位移、油罐底板壓力分佈及地基土強度增長等方面的實測與數據分析。 -
When the propeller operates in the spatially non - uniform velocity field behind the ship, the unsteady cavitation on the blades often causes the vibration of ship structure, the propeller noise and the cavitation erosion on the blade
在船尾非均勻流場中工作的螺旋槳，常常由於槳葉上產生了非定常空泡，導致船尾振動和螺旋槳噪聲，致使槳葉表面出現空泡剝蝕。 -
The results showed that velocity distribution was non - uniform outside the filters
結果表明，濾管外速度分佈是不均勻的。 -
Actually correction coefficient of kinetic energy reflects the non - uniform characteristics of cross - sectional velocity in natural rivers. it is related with hydraulic parameters and can be expressed by chezy ' s coefficient. the larger the resistance of boundary, the more non - uniform the distribution of cross - sectional velocity
動能修正系數實際上反映了河道橫斷面流速分佈的不均勻性，與斷面的水力要素有關，可用謝才系數c來表示，水流所受的阻力越大，邊界對其影響也就越大，流速分佈愈不均勻，導致動能修正系數增大。 -
An effective discritized scheme based on staggered grids is provided by deeply studying the construction and implementation of difference scheme on non - uniform and staggered grids. coupling of velocity and pressure is solved by simple method ; the boundary conditions and relations of velocity and pressure are analyzed in details
深入研究交錯非均勻網格的差分方案的構造與實施，基於交錯網格提出了有效離散格式；採用simple演算法對速度壓力關系解耦，列舉幾種代數方程的求解辦法，分析並闡述了逐線鬆弛技術。
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