The space-like hypersurfaces with constant scalar curvature in a de Sitter space were studied and a pinching theorem on the square of the norm of the second fundamental form was obtained.

研究de Sitter空間中具有常數(shù)量曲率的類空超曲面欧美性爱A√视频在线，將Cheng-Yau的自共軌運(yùn)算元口作用在對稱張量T上国产免费高清黄色视频网页，得到了這類超曲面關(guān)於第二基本形式模長平方的一個(gè)拼擠定理日韩一级婬片A片中文，加強(qiáng)了已有的相應(yīng)結(jié)果久久黄色视频。

Let x be an immersion of a compact Willmore surface M into the n-dimensional unit sphere Sn. In this thesis we first consider the Willmore surfaces in the unit 3-sphere, and establish an integral inequality for the square of the length of the trace free part of the second fundamental form and the mean curvature.

令x是一個(gè)從緊致威爾摩曲面M到n 維單位球面Sn的浸入国产一二级理论片在线观看，在本論文中我們首先考慮3維單位球面中的威爾摩曲面并建立一個(gè)包含第二基本型式跡為零部份的張量長度平方與平均曲率之積分不等式精久久免费视频。

On the basis of Prof. S. Knothe's expression for arbitrary point in subsidence trough, the equations are derived with probabilistic integration for calculation of slope, curvature, horizontal movement, horizontal deformation, torsion and form deformation at arbitrary direction and point in subsidence trough.

本文在克諾特建立的地表下沉盆地任意點(diǎn)表達(dá)式的基礎(chǔ)上，導(dǎo)出用概率積分法計(jì)算下沉盆地任意點(diǎn)任意方向的傾斜色呦呦一区二区三区、曲率亚洲国产精品亚洲一区二区三区、水平移動(dòng)、水平變形igao为爱寻找激情、扭曲和形變公式超碰在线免费首页，并得出主剖面計(jì)算公式是任意點(diǎn)任意方向移動(dòng)與變形計(jì)算公式的特例。

Shen prove a short time existence theorem for manifolds with umbilical boundary. He also derived the Simons' identity for the boundary under the Ricci flow. And as a corollary, Shen show that any three-manifolds with totally geodesic boundary which admits positive Ricci curvature can be deformed to a space form with totally geodesic

而帶邊流形上的Ricci流的研究始于Shen老牛影视国产在线，在1996年九九爱综合，Shen在中考慮帶邊三維流形上的黎曼度量的Ricci形變，證明了如果初始三維流形的黎曼度量具有正Ricci曲率和全測地邊界免费人成毛片在线视频，則此三維黎曼流形上存在著常正曲率的黎曼度量国产精品久久久久精品二级。

Tectonization effects on Aran anticline exhibited as the follows: Aran anticline begin form rudiment in Ml member of URF; stronger compressive aggrandized extent of uplift in M2 member of URF; the strongest Tectonization aggrandized ultimately extent, especially in curvature of Aran anticline in later Quaternary sediment, Aran anticline finalized the design.

晚阿爾卑斯構(gòu)造運(yùn)動(dòng)對Aran背斜地區(qū)的具體影響為：上紅組M_1段沉積末，Aran背斜已經(jīng)形成雛形国产一级毛片女人喷水视频；M_2段開始沉積到結(jié)束高清无码黄色，構(gòu)造擠壓活動(dòng)強(qiáng)度有所加大，Aran背斜隆起幅度相對有所增大黄色网站网页观看；第四系以后發(fā)生了一次強(qiáng)烈的構(gòu)造運(yùn)動(dòng)使Aran背斜的褶皺幅度国产精品熟女的刺激视频、特別是曲度明顯的加大，至此Aran背斜基本定型一级毛片AB片高清毛片。

They exhibit bending deformation following the direction of the nanotube curvature. At room temperature, a nanoparticle smaller than Au 70 often escapes from the carbon nanotube surface and can be captured again by the nanotube or coalesces with other nanoparticles to form a larger nanoparticle.

納米顆粒在碳納米管上形成以后国产3p一区二区三区视频，小于Au 70的納米顆粒有可能脫離碳納米管運(yùn)動(dòng)亚洲免费视频2，它們在脫離后可能再度被碳納米管俘獲或者跟其他納米顆粒結(jié)合并被重新吸附到碳納米管上來。

The Electric Dust Remover works like this:on the positive and negative pole which two metal curvature diameter's difference is abvious , put through the high voltage direct current and form a static electricity field in which gas is made to ionize.

電除塵器是在兩個(gè)曲率半徑相差較大的金屬陽極和陰極上成,人免费视频播放，通過高壓直流電国产麻豆色视频在线观看，維持一個(gè)足以使氣體電離的靜電場。

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.

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青青超碰，三角吊梁下面通過螺母及推力軸承與一個(gè)橫梁連接乱淫网站，三角吊梁相對橫梁可在水平方向做360度旋轉(zhuǎn)，從而實(shí)現(xiàn)電動(dòng)小車的整體水平方向轉(zhuǎn)動(dòng)午夜操B，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[国产原创中文]国产AV。