The rectangle and circle packing problem is concerned with packing a subset of different size rectangles and circles into a rectangular container,with the objective of maximizing the container's area usage.

1前言本文所研究的矩形和圓形裝填問題，就是將不同大小的矩形塊和圓餅裝入一個矩形容器中18污视频网站在线免费观看，以最大化容器的面積利用率為優(yōu)化目標美女互摸互慰AV网站在线观看。

Take the normal graded granularity for example, the curve function of the collaring rectangle was derived, which can provide a kind of mathematic model for drawing the lithologic frame of terrigenous elastic rocks in the second development of graphic software.

為了彌補繪圖軟件的這些不足，提出用曲邊矩形代替矩形來繪制陸源碎屑巖巖性框架久久精品视频这里，并以表示正粒序陸源碎屑巖巖性框架的曲邊矩形為例成年人小视频在线观看免费，詳細推導(dǎo)了其曲邊的函數(shù)表達式，為繪圖軟件的二次開發(fā)提供了陸源碎屑巖巖性框架繪制的一種數(shù)學(xué)模型国产精品免费黄网。

With the experimental data, operation time of contour extraction of binary image represented by rectangle NAM is 0.31 to 0.86 times of that of image represented by matrix, operation time of Euler number computing of binary rectangle NAM image is 0.11 to 0.63 times of that of the pattern algorithm, operation time of connected component labeling of binary image represented by rectangle NAM is 0.08 to 0.37 times of that of image represented by matrix, 0.05 to 0.12 times of that of image represented by quadtree.

實驗數(shù)據(jù)表明黄片又污又色又爽，采用矩形NAM表示的二值圖像輪廓提取算法的執(zhí)行時間是矩陣表示的0.31至0.86；矩形NAM表示的歐拉數(shù)計算執(zhí)行時間是模板算法的0.11至0.63美国无码黄视频；矩形NAM表示的連通區(qū)域標記算法執(zhí)行時間是矩陣表示的0.08至0.37久久久久国内精品久久久久，四元樹表示的0.05至0.12。

Finally, based on the fundamental solutions of Biots consolidation of transversely isotropic saturated multi-layered soils, the Fredholm integral equation of second kind for the interaction between transversely isotropic saturated multi-layered soils and rectangular piles is established, the relevant numerical analysis is also carried out.

最后广元瓜温科技有限公司，基于橫觀各向同性層狀飽和地基Biot固結(jié)問題的基本解答超peng免费视频在线观看，建立了橫觀各向同性層狀飽和地基與方形單樁、群樁共同作用問題的第二類Fredholm積分方程97人人超碰在线，并進行了數(shù)值分析與計算亚洲韩国黄色网址；通過將矩形剛性基礎(chǔ)基底劃分成若干個大小相等的矩形網(wǎng)格，用矩形均布荷載表示網(wǎng)格的基底反力一级a爰片，并利用已獲得的橫觀各向同性層狀飽和地基Biot固結(jié)問題的基本解來求解每個矩形網(wǎng)格的柔度系數(shù)黄色网站在现免费观看，然后根據(jù)剛性基礎(chǔ)與層狀飽和地基的接觸條件和其本身的靜力平衡條件，求解分析了橫觀各向同性層狀飽和地基與剛性矩形板的共同作用問題又粗又大又长的免费视频。

In the proposed algorithm, we make use of the Lipschitz condition to determine lower bounds of functions over each rectangle.

在算法中欧美精品九九99久在免费线，我們運用Lipschitz條件來確定目標函數(shù)和約束函數(shù)的在每個n-矩形上的上下界，對于n-矩形的分割网站视频你懂得，我們采用選擇珩矩形最長邊的二分法亚洲最新永久免费视频，同時我們采用了一些矩形刪除技術(shù)，在不大幅增加計算量的前提下国产激情视频网址，起到了加速算法收斂的效果人妻一级片。

objectiveto evaluate the result of using rectangular advacement flaps for repairing the eyelid defects at the edges of palpebra.methodswe have used rectangular or double rectangular advacement flaps to repair the defects of theantieror margin of eyelid in 36 cases.to repair the posterior margin defects ,when the defects of thetarsal plates were shorter than 5mm,the tarsal plates were closed directly , longer than 5mm ,sliding tarsal palpebral conjunctive flaps were to be used.resultsin 36 cases all of the flaps were survived with primary healing, slight scar, no absence of eyelashes, no notch deformity at the edge of palpebra, no trichiasis.

目的：探討應(yīng)用矩形推進皮瓣修復(fù)瞼緣眼瞼缺損的效果。方法：對36例瞼緣腫物切除的眼瞼缺損患者国产亚洲小电影在线播放，采用矩形或雙矩形推進皮瓣修復(fù)眼瞼前層缺損日本性爱视频网。眼瞼后層瞼板缺損小于5mm者.欧美黄色视频一区二‘区三区，采用直接縫合法；瞼板缺損大于5mm者久久热最新，采用瞼板瞼結(jié)膜瓣移行法久久国产国产精品。結(jié)果：36例患者皮瓣全部成活，切口ⅰ期愈合欧美人与动牲交XXⅩBBB，手術(shù)瘢痕輕微﹑睫毛無缺失﹑無倒睫﹑瞼緣圓滑無切跡畸形欧美屄视频。

Combining with the National Natural Science Foundation ofChina(No.50478032), following researches were done in this thesis: 1 The variation regularity of the ultimate anti-bending capacity of therectangular-sectioned beam with different corrosion has been obtained through thequalitative analysis of 48 beams (32 corroded beams and 12 comparing beams) withaccelerated corrosion; 2 The conclusion has been obtained that the strain of corroded steel bar andconcrete no longer fit in with the assumption of plane section through the analysis ofthe strain data, the strain relation of steel bar and concrete in the mid-span section ofvariously corroded beams at ultimate has been obtained. Through the building of newgeometric relation, the expression of the height of compressive area in the corrodedbeam with rectangular section has been deduced, and the formula with corrosion rateas the main variable for the anti-bending capacity of the corroded concrete beam hasbeen suggested and verified by experiment.; 3 The influence of steel bar corrosion and the concrete regression to the flexureductility coefficient of the corroded structure component has been analyzed. Based onthe relation of steel bar and concrete at yield and ultimate, the expression for theflexure at yield and ultimate of corroded reinforced concrete beam, and the model forthe calculation of the flexure ductility has been built.

本文結(jié)合國家自然科學(xué)基金項目(50478032)"既有鋼筋混凝土橋梁時變可靠度研究"，主要進行了以下研究工作： 1通過對48根快速銹蝕鋼筋混凝土矩形截面梁(32根銹蝕梁和12根對比試驗梁)數(shù)據(jù)的定性分析aⅤ色国產歐美，得到了不同銹蝕率下欧美一区涩涩，銹蝕鋼筋混凝土矩形截面梁極限抗彎承載力的變化規(guī)律； 2通過對應(yīng)變數(shù)據(jù)的分析精品国产美女精品网站，論證了銹蝕構(gòu)件鋼筋和混凝土的應(yīng)變不再符合平截面假定的結(jié)論国产古装精品三级国产区，并通過回歸分析得出了不同銹蝕率的螺紋鋼筋梁和光圓鋼筋梁在極限彎矩作用下，跨中截面處鋼筋應(yīng)變和鋼筋處混凝土應(yīng)變的關(guān)系精品久久久久久无码中文字幕一区，通過構(gòu)造新的幾何關(guān)系深圳老熟女A片，得出了銹蝕鋼筋混凝土矩形截面梁計算受壓區(qū)高度的表達式，既而得出了以銹蝕率為主要變量的銹蝕鋼筋混凝土矩形截面梁的正截面抗彎計算建議公式jixx，并通過試驗數(shù)據(jù)加以驗證； 3分析了鋼筋銹蝕和混凝土劣化對銹蝕構(gòu)件曲率延性系數(shù)的影響日韩一区二区在线视频播放，結(jié)合鋼筋屈服和極限彎矩兩種狀態(tài)下鋼筋和混凝土的應(yīng)變關(guān)系玖玖色免费，分別得到了銹蝕鋼筋混凝土矩形截面梁屈服曲率和極限曲率的計算表達式；既而推導(dǎo)出曲率延性系數(shù)的計算模型欧美免费精品视频一区。

In this paper, reciprocal theorem method is generalized to solve the problems for the forced vibration of thick rectangular plates based on the Reissner s theory.

本文將功的互等定理法推廣應(yīng)用于求解基于Reissner理論的厚矩形板受迫振動問題·本文導(dǎo)出了厚矩形板動力基本解2020国内精品久久久久精品99；給出了三邊固定一邊自由厚矩形板在均布簡諧干撓力作用下穩(wěn)態(tài)響應(yīng)的精確解析解·這是計算厚矩形板受振動穩(wěn)態(tài)響應(yīng)的一個簡便通用的方法

By the numerical analysis of the ultimate bearing capacity of two- and three-dimensional footing under combined loading mode, the results show that the effect of alteration of underground water lever on bearing capacity of three-dimensional foundation is more than on that of two-dimensional foundation, the effect of soil gravity on bearing capacity of three-dimensional foundation is more than that of two-dimensional foundation. At the same time, the numerical calculation process of ABAQUS indicates that whether the geostatic stress is balanced or not has great effect on the numerical convergence. In view of the effect extent of dilation angle of soil on the ultimate bearing capacity and the failure pattern of foundation, the condition of two-dimensional plane strain is higher than that of the three-dimensional foundation.

復(fù)合加載模式下，通過對三維矩形基礎(chǔ)和二維條形基礎(chǔ)進行數(shù)值分析美女被c啊啊，結(jié)果表明：黏性土地基中地下水位的變化欧美一级囗交视频视频，對三維矩形基礎(chǔ)極限承載力的影響程度高于對二維條形基礎(chǔ)的影響；在求解地基極限承載力的過程中欧美小性交黄色，土體重度對三維矩形基礎(chǔ)的影響明顯高于對二維條形基礎(chǔ)的影響，同時ABAQUS數(shù)值計算過程表明国产一级特黄特色多人视频，地基土體地應(yīng)力能否合理平衡，對數(shù)值求解過程中是否收斂有很大的影響日韩性爱黄片；就土體剪脹角對地基極限承載力的影響程度而言，二維平面應(yīng)變情況下土體剪脹角對極限承載力的影響比三維情況下的影響更明顯www91黄色网站，即土體剪脹角對條形基礎(chǔ)極限承載力的影響高于三維矩形基礎(chǔ)成年人国产。

Basic characteristics of cosine transform spectrum were analyzed, where contour lines of 2D cosine transform of point mass present the shape of a quarter of concentric circles and the number of counter become small along with the increasing of wave numbers. The spectrum of vertical rectangularcylinder put up periodic zero counters which mark off quadrate areas, the values of counter in each areas alternately change between the plus and the minus, and with the increasing of wave number, the values of counter present attenuation character alike e exponent.

分析了點質(zhì)量和直立矩形柱體重力異常余弦變換譜的基本特征：點質(zhì)量二維余弦變換譜等值線呈1/4同心圓形狀黄色片在线播放又大又粗又爽无遮挡，等值線隨著波數(shù)的增大而變稀韩国精品毛片2019；直立矩形柱體譜出現(xiàn)了周期性變化的零等值線欧美、日韩一区、二区、三区、四区。，該等值線將非零等值線劃分為a×b個矩形區(qū)域，而且等值線值在各矩形型區(qū)域中正負交替變化国产精品重口黄金调教系列，隨著波數(shù)的增大偷拍偷窥性视频，不同的矩型域中等值線值呈e指數(shù)衰減特征。

rectangular frequency diagram：矩形頻率圖,矩形頻率圖

rectangular core 矩形鐵芯 | rectangular frequency diagram 矩形頻率圖,矩形頻率圖 | rectangular frequency distribution 矩形頻率分布,矩形頻率分布

rectangular lattice design：矩形格子設(shè)計,矩形格子設(shè)計

rectangular lattice 矩形點陣,矩形點陣,長方點陣 | rectangular lattice design 矩形格子設(shè)計,矩形格子設(shè)計 | rectangular layout of streets 棋盤式街道系統(tǒng)

rectangle：矩形 矩形

矩形 矩形(Rectangle)又叫箱形,也是一種典型的整理形態(tài). 價格上升到某水平時遇上阻力,掉頭回落,但很快便獲得支持而回升,可是回升到前次相同高點時卻再一次受阻,而挫落到上矩形(Rectangle)又叫箱形,也是一種典型的整理形態(tài).

rectangularity：矩形性 矩形性

rectangularintegration 直交積分 | rectangularity 矩形性 矩形性 | rectangularlagstructure 矩形滯后結(jié)構(gòu) 矩形滯后結(jié)構(gòu)

squarer：矩形波形成器矩形脈沖形成器平方電路

squarer 矩形波形成器;平方電路 | squarer 矩形波形成器矩形脈沖形成器平方電路 | squarer 矩形波形成器矩形脈沖形成器平方電路平方器

squarer：矩形波形成器矩形脈沖形成器平方電路平方器

squarer 矩形波形成器矩形脈沖形成器平方電路 | squarer 矩形波形成器矩形脈沖形成器平方電路平方器 | squarer 矩形脈沖形成器

squaring：形成矩形形成矩形脈沖四扭編織電纜

squaring circuit 矩形脈沖形成電路 | squaring 形成矩形形成矩形脈沖四扭編織電纜 | squat 尾墩現(xiàn)象

squaring circuit：矩形波整形電路,矩形波整形電路,矩形脈沖形成電路,矩形脈沖形成電路,平方電路

squarewave electromagnetic flow-meter 方波電磁流量儀 | squaring circuit 矩形波整形電路,矩形波整形電路,矩形脈沖形成電路,矩形脈沖形成電路,平方電路 | squaring off 対決

rectangular waveguide：矩形波導(dǎo)=>方形導(dǎo)波管

rectangular wave guide 矩形波導(dǎo)管,矩形波導(dǎo)管 | rectangular waveguide 矩形波導(dǎo)=>方形導(dǎo)波管 | rectangular window 矩形窗口,矩形窗口,特殊濾波器,波門窗口

rectangular wave guide：矩形波導(dǎo)管,矩形波導(dǎo)管

rectangular wave generator ==> 矩形波發(fā)生器,矩形波發(fā)生器 | rectangular wave guide ==> 矩形波導(dǎo)管,矩形波導(dǎo)管 | rectangular waveguide ==> 矩形波導(dǎo)=>方形導(dǎo)波管