The analysis show that O-forming is accomplished by bending of subdividing suspend arc,characterized by evolvement of curvature peaks form one to multiple peaks,which have nearly equal peak-to-peak distance.

UOE是以熱軋厚鋼板為原料黄色网站38无码，通過(guò)預(yù)彎邊毛片影片、U成形、O成形和對(duì)埋弧焊接管坯擴(kuò)徑等成形工序制造大口徑直縫焊管的一種工藝人人干97精品。

The analysis show that O-forming is accomplished by bending of subdividing suspend arc,characterized by evolvement of curvature peaks form one to multiple peaks,which have nearly equal peak-to-peak distance.Process loading has corresponding episodic changes,and each episodic curve is similar.Loa...

載荷在成形過(guò)程產(chǎn)生相應(yīng)的階段性變化日韩手机自拍无码AV，各段位移載荷曲線具有相似性，并且載荷隨懸弧的細(xì)分明顯增加。O成形過(guò)程分為4個(gè)階段：U形口合擾国产亚洲欧美、直邊彎曲无码综合网、懸弧二次彎曲和懸弧多次彎曲過(guò)程。

Submanifold; Homology group; Topological sphere theorem; L~2 harmonic 1-forms; Ends; Eigenvalue; Mean curvature; Second fundamental form

基礎(chǔ)科學(xué)午夜一级黄色片网站，數(shù)學(xué)九九国产色视频，幾何、拓?fù)渥恿餍稳巳司肥悠担煌{(diào)群人人操人人干哺乳期巨乳大奶子；拓?fù)淝蛎娑ɡ恚?L~2調(diào)和1-形式；端男人桶爽女人30分钟视频动态图；特征值最新av在线免费；平均曲率；第二基本形式

Principal curvatures and principal directions are obtained by computing in closed form the eigenvalues and eigenvectors of certain 3×3 symmetric matrices defined by integral formulas, and closely related to the matrix representation of the tensor of curvature.

通過(guò)計(jì)算3×3對(duì)稱矩陣的特征值和特征向量可以得出主曲率和主方向国产免费自拍，而該對(duì)稱矩陣是由積分公式定義并且與曲率張量的矩陣表達(dá)密切相關(guān)国产首页在线视频。

Structure form adopts converse triangle beam double-hole connection welded by general electric trolley wall plate and steel plate, connection shaft, triangle beam bottom is connected with girder by nut and thrust bearing, triangle beam could rotate 360 degrees horizontally, thus realize whole set electric trolley horizontal rotation, largely reduce curve track curvature radius of electric hoist traveling mechanism.

描述： 結(jié)構(gòu)形式采取通用電動(dòng)小車墻板與一個(gè)鋼板和連接軸組焊的倒三角形吊梁雙孔連接，三角吊梁下面通過(guò)螺母及推力軸承與一個(gè)橫梁連接黄黄视频免费观看，三角吊梁相對(duì)橫梁可在水平方向做360度旋轉(zhuǎn)免费一级毛片在线播放放视频，從而實(shí)現(xiàn)電動(dòng)小車的整體水平方向轉(zhuǎn)動(dòng)，大大減小了電動(dòng)葫蘆運(yùn)行機(jī)構(gòu)弧形軌道曲率半徑www黄片观看com。

Based on the theory of gearing and differential geometry, a series of geometric relationships between conjugate tooth surfaces are analyzed, basic relationships of normal curvature as well as geodesic torsion between conjugate tooth surfaces are derived mathematically for the most general form of gearing.

基于微分幾何和齒輪嚙合理論，分析了共軛嚙合齒面間的一系列幾何關(guān)系xx国产，從而揭示了兩個(gè)作空間共軛嚙合運(yùn)動(dòng)的齒面之間的法曲率久久黄色密月网站、短程撓率的內(nèi)在幾何聯(lián)系。作為上述理論的具體應(yīng)用99riav7.com国产好吊妞，研究了準(zhǔn)雙曲面齒輪傳動(dòng)兩齒面之間在給定參考點(diǎn)處的法曲率亚洲幼小激情视频图片小说在线播放网站、短程撓率的關(guān)系

Based on the theory of gearing and differential geometry, a series of geometric relationships between conjugate tooth surfaces are analyzed, basic relationships of normal curvature as well as geodesic torsion between conjugate tooth surfaces are derived mathematically for the most general form of gearing .

作為上述理論的具體應(yīng)用，研究了準(zhǔn)雙曲面齒輪傳動(dòng)兩齒面之間在給定參考點(diǎn)處的法曲率在线观看福利小视频国产、短程撓率的關(guān)系人人超碰人人双人人舔。

In this paper, we mainly study the gap of the second fundamental form of hypersurface with constant mean curvature in the unit sphere.

本文主要研究了單位球面內(nèi)常平均曲率超曲面的第二基本形式模長(zhǎng)平方的間隙性。

The essay discusses the calculation and selection of body-form co-efficient for double contact lines suspension in urban mass transit, analyzes the affection from wind displacement of contact line, calculation of span , curvature of mast and calculating load and recommends that the shield between contact lines shall be considered for wind load of multi-contact lines.

對(duì)城市軌道交通雙導(dǎo)線接觸網(wǎng)懸掛風(fēng)載體型系數(shù)進(jìn)行了計(jì)算選用方面的探討自拍下一页，并對(duì)接觸線風(fēng)偏移九久视频精品免费、計(jì)算跨距、支柱撓度和計(jì)算荷載的影響進(jìn)行了分析北京一级黄片，建議多導(dǎo)線的風(fēng)載情況應(yīng)考慮導(dǎo)線間的屏蔽作用AAAα黄色视频。

The adhesion region between two adjacent teeth on the 3D dental model is first detected by exploiting the minimum principal curvature information. Then, the adhesion region is cut off and the tooth profile opening caused by the removal of the adhesion region is filled with triangular patches adopting a local optimization scheme, it is then refined to form an intermediate restoration surface patch. The final restoration result is obtained by minimizing the surface energy to reflect the bio-characteristics of the single tooth.

根據(jù)三維牙頜模型的形態(tài)特征，采用基于曲面最小主曲率的方法對(duì)粘連區(qū)域進(jìn)行準(zhǔn)確的檢測(cè)提让琅俦仁悠低尽www.婷婷五月情.com；對(duì)刪除齒間粘連區(qū)域后生成的齒間開(kāi)口利用局部最優(yōu)化權(quán)值規(guī)則進(jìn)行剖分并細(xì)分優(yōu)化，生成"中間"恢復(fù)曲面国产很爽的超薄丝袜脚交网站；根據(jù)牙齒的生理醫(yī)學(xué)特征黄色视频在线观看精品，以齒間開(kāi)口的邊界信息為約束條件黄色一级网站视频在线观看，采用基于最小化曲面能量函數(shù)的方法對(duì)"中間"恢復(fù)曲面進(jìn)行變形調(diào)整，實(shí)現(xiàn)單顆牙齒缺失形狀的準(zhǔn)確恢復(fù)81av在线视频。