cubic surface 中文意思是什麼
cubic surface
解釋
三次曲面-
Abstract : the effect of correction of self - consistent potential on electronic structure in simple cubic nanocrystal particles is calculated by means of the green ' s function method in the tight - binding approximation, taking only the nearest neighbor matrix elements into account. the numerical results show that the electronic energy spectrum is shifted, the chemical potential is not equal to the atomic energy level, the electronic density at each lattice point is changed, and the variation of electronic density at surface lattice point is the largest
文摘:在緊束縛近似下，只計及最近鄰的矩陣元，採用格林函數計算了自洽勢修正對簡立方納米晶體顆粒的電子結構的影響，發現電子能譜發生了移動，化學勢不等於格點原子能級，各格點的電子密度也發生了變化，其中以表面格點的電子密度變化最大。 -
Based on the principle of afm ’ s mechanism, with the needs of 6 - dof parallel robot with cubic millimeter movement space and nano - scale movement accuracy, and considering the openness, scope bound and reliability of the adjustment device, this paper build a super - exact device for the measurement of nona - scale surface
本論文在借鑒原子力顯微鏡原理的基礎上，結合具有立方厘米級工作空間、納米級運動解析度的6 - dof並聯工作臺的實際測量需要，綜合考慮了系統的開放性、掃描范圍和調節裝置的可靠性，研製了面向納米測量定位的高精度表面納米級形貌測量樣機。 -
Compared with cubic splines, quintic splines have more advantages for surface machining. so the generation and processing of nc instructions have become one of the nucleal technologies of cam and cnc
由於與三次樣條函數相比，五次樣條函數具有更大的優越性，所以基於五次樣條的nc指令生成與處理技術已成為cam技術和cnc技術的主要發展趨勢之一。 -
Components, structure and surface morphology of the resulted films were identified by fourier transform infrared ( ftir ) spectroscopy, x - ray diffraction ( xrd ) and scanning electronic microscopy ( sem ). the analyses showed the content of cubic boron nitride in the resultant films on substrates was rather high and crystal particles of c - bn with uniform size, smooth crystal plane and regular shapes ( quadrangle and hexagon ) densely arrayed on the substrate
傅里葉轉換紅外吸收（ ftir ）光譜儀、 x射線衍射（ xrd ）儀和掃描電鏡（ stm ）的測量結果顯示，基底上的bn膜中立方相含量很高，且晶粒大小均勻、排列緻密，晶形呈規則的四角和六角形。 -
We need to know the importance of big, mature trees, because living space for most of man ' s fellow creatures on this planet is figured not only in square measure of surface but also in cubic volume above the earth
我們要認識到大樹的重要性，因為動物的生存空間不僅應按平方面積來計算，還應按立方體積來計算。 -
The histologic lesions were characterized by the remarkable atrophy of intestinal villi, basal vacuolation of enterocytes, increment of the crypt and the villus - to - crypt ratio had significantly decrease. compared with that of noninoculated control chicks. besides. intestinal villi become thin and flat. or cubic, also accompanied with necrosis. many villous enterocytes were detached from the lamina propria and the lamina propria contained a diffuse infiltrate of lymphocytes, plasma cells, macrophages. the characteristic ultrastructural changes observed by electronmicroscope were swelled mitochondria and dilated endo - plasticreticulum. ribosome on the surface of endo - plasticreticulum fall off and the number of ribosome within the cell decrease
動物回歸試驗中接種兩周齡spf雞， 24h后陸續發病，表現為持續性水樣腹瀉；剖檢可見病雞脫水、小腸內有大量的液體和氣泡、腸粘膜變薄；組織學變化為腸絨毛上皮壞死、脫落，絨毛平均長度減少而隱窩深度增加，固有層中淋巴細胞浸潤。其臨床癥狀及病理組織學變化與自然發病相同。 -
Secondly, an improved approach for fairing of bi - cubic b - spline surface is presented
提出了一種改進的雙三次b樣條曲面光順方法。 -
The problem of triangular mesh based c2 - continuous piecewise bi - cubic b - spline surface reconstruction has been studied
對分片雙三次b樣條曲面重建問題進行了研究。 -
Compared with the behavior of macromolecules in real solution system, the adsorption information in the monte carlo simulation system, such as adsorption isotherm, surface coverage, and bound fraction, was studied for discussing its relation to simulation parameters. five - selection simple cubic lattice, self - avoiding walk, and nearest interaction model were used to construct the homopolymer adsorption model on the solid - liquid interface. periodic boundary conditions were used to reduce the fixed error from limited cubic lattice in size
模擬中採用五選擇簡單立方格子上的自迴避行走和最近鄰相互作用模型；使用周期性邊界條件以減小有限大格子空間帶來的系統誤差；用鏈節間相互作用能、界面吸附能、體相濃度和鏈長約束體系中的高分子的吸附行為；用末端轉動、 l -翻轉、曲柄運動、蛇形運動和r - r切除-生長法對模擬體系進行擾動；用系統達到吸附平衡后的樣本來研究模擬體系中的高分子鏈在固液界面上的吸附。 -
The tsf method combines efficiently llsf and tri - cubic spline interpolation, learns from others " strong points to offset one ' s weaknesses, so has rapidity and high accuracy of computation and is suitable for contour surface drawing in real - time. 3
該方法綜合多元樣條擬合法與局部加權最小二乘法，揚長避短，不僅保證了逼近精度，提高了計算速度，而且加密計算的結果可直接應用於等位面的實時顯示。 -
In order to realize 3d garment intelligent design, this paper brings forward a method to set up 3d garment model with form - points controlled spline and bi - cubic surface patch
摘要為了實現三維服裝款式智能設計，提出以形值點控制的樣條曲線和雙三次曲面構建服裝立體模型的方法。 -
A hexagonal crystal, one of the three known structures iron can take, is different from the cubic crystalline structures iron takes at the planet ' s surface
六邊形的水晶，能夠得到的熟知的三結構鐵，不同於從地球表面獲得的立方體水晶的結構鐵。 -
In chapter 6, the usage of floater ' s algorithm on a disk is discussed which is for geometric reconstruction of surface with four edges using double cubic b - spline surface, and the algorithm is generalized to a cylinder and a mobius
第六章討論了floater關於四邊拓撲曲面的雙三次b樣條幾何重建方法在圓一摘要浙江大學博士學位論文一盤拓撲曲面上的應用，並將其推廣到平環與mbbius帶上。 -
We will start with a cubic inch of hydrogen at atmosphere pressure ( or the air pressure at the earth ' s surface )
我們從大氣壓力（即地球表面的空氣壓力）下的一立方英寸氫氣開始。 -
Engineers dug 1, 383, 000 cubic yards of gravel from riverbeds to surface the road. if this gravel had been loaded on railcars, the train would have been 427 miles long
工程兵從河床挖了用以鋪路面的105萬立方米的礫石。如果將這些礫石用火車車皮裝載，那列火車得680公里長。 -
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。 -
In this dissertation, the numerical computation for the acoustic radiation problem ( arp ) is studied deeply and systematically in the theory, method and the application technique, based on analyzing the situation of the home and abroad on the numerical computation for the acoustic radiation problem. the calculation formulas of the boundary element method ( bem ) for the exterior acoustic radiation problem in the full - space and half - space are deduced, based on the wave propagation theorem ; the arising of the non - unique solutions, which is associated with the application of the boundary integral equation ( bie ) in acoustic radiation problem, is analyzed and proofed ; the improved combined helmholtz integral equation formulation ( ichief ) is presented to overcome the non - uniqueness problem more effectively and reliably ; the determination of the singular integral coefficients on various occasions is analyzed ; the properties and treatments of the singular integrals with different orders axe studied ; the computation program of the cubic spline ichief is developed and its ability to overcome the non - uniqueness problem and feasibility to discrete the surface coarsely with the sufficient calculation precision are examined through examples
第二章在聲波動理論基礎上，詳細地推導出對應于無限域和半無限域的外部振動聲輻射問題的邊界積分方程計算公式；根據fredholm積分理論，對利用邊界積分方程計算振動聲輻射問題過程中解的非唯一性的產生進行了分析和證明；改進了chief法以提高其克服解的非唯一性的有效性和可靠性；對不同條件下奇性系數的計算、強奇性積分的收斂性及其在變量替換時與普通積分的差異性、不同階奇性積分的計算、數值求積分等進行了研究；開發了三次樣條改進chief法計算軟體，並通過算例考核了該方法在特徵波數處克服解的非唯一性的有效性和在保證計算精度的前提下實現剖分粗化以提高計算效率的可行性。 -
Zhejiang 8 amounting to tunnel engineering limited company is alley of well of bridge of road surface of channel of pilot a ship into a harbour of water and electricity of volume road tunnel, railroad channel, irrigation works, roadbed, mine, large cubic metro of earth and stone blow up the professional construction company that construction is an organic whole, have channel highway project to always contract two class aptitude
浙江八達隧道工程有限公司是集公路隧道、鐵路隧道、水利水電引水隧道、路基路面橋梁、礦山井巷、大型土石方爆破施工為一體的專業施工企業，擁有隧道公路工程總承包貳級資質。 -
( 3 ) the thesis proposes an improved algorithm for fairing of bi - cubic b - spline surface which detects the location of non - fairing automatically and adjusts the relative control points. in addition, a new highlight - line method used for surface interrogation is presented
另外，對曲面光順性檢查的高光線方法進行了改進，用光片模型取代光柱模型，解決了現有高光線方法存在的檢查結果與基準光線相關的問題。 -
Surface modeling approach for free - form machining based on the cubic spline function
基於三次樣條的離散點曲面構建演算法
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