Hence the associated surface of minimum genus can be got by doing a sequence of exchangers on some associated surface.

通過對(duì)任一關(guān)聯(lián)曲面作一系列調(diào)位九九小视频，從而可得最小虧格的關(guān)聯(lián)曲面在线欧美亚洲黄，此虧格即為所求圖類的最小虧格综合欧美亚洲日本。

Therefore, quantum chemistry associated with surface analytical techniques is used to investigate the key surface reactions involved in the growth and functionalization of group-IV semiconductor surfaces.

我們的計(jì)算從理論上預(yù)測(cè)了有機(jī)小分子催化反應(yīng)的機(jī)理和可能的反應(yīng)路線国产91午夜精品一二三区，對(duì)于丙烯醇在Si(100)-2×1上表面上的計(jì)算表明O—H解離反應(yīng)是表面選擇性的反應(yīng)通道可以免费看黄色网站。

It is also found that for noble metals'(111) surface the impact of substitutional impurities on surface vacancy formation energy depends on the impurities' cohesive energy, atomic radius and alloy heats of solution.C.

貴金屬(111)表面雜質(zhì)替位對(duì)表面空位形成能的影響則主要取決于替位雜質(zhì)的凝聚能欧美性爱资源、原子半徑以及合金溶解熱。

While gel is still soft add cold surface attractant uniformly to warm gel surface.

當(dāng)膠仍是軟的時(shí)候热久久伊人，在熱膠表面均一地加入冷的表面誘食劑一级特黄AAA大片在线看视频。

The third approach is about the concept of an ITO direct Ohmic contact structure on GaP window layer. The direct Ohmic contact structure is performed by the deposition of an AuBe diffused thin layer and the following activation process on the surface of a Mg-doped GaP window layer. The presence of this thin AuBe diffused layer yields the Be dominant metallic surface layer and significantly reduces the barrier height between the ITO and p-GaP layer. Via the modification of contact structure, not only the brightness was significantly increased but the reliability was comparable to the conventional LED without this structure.

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Numerical control lathe have following outstanding superiority than traditional lathe include:Can process out complicated parts, such as the curve coming out in traditional machine tooling, curved surface,etc;Because computer have superb operation ability is can instantaneous to calculate out each coordinate axis instantaneous amount of exercise that should move accurate, So can compound into the complicated curve or curved surface ;Can realize automation that process is and flexible automation, so efficiency constant traditional lathe raises by 3-7 times;Because the computer has memory and stores ability ,Can carry out automatically according to the order that the procedure stipulates,so realize automation;Processing precision of part high, size disperse degree light, make and assemble easy, No longer need to" repair the damaged parts of a machine and supply replacements";Can realize the concentration of many processes,have many kinds of self-containment functions,such as autoalarm, controlling, automatic compensation automatically,etc;Therefore can realize that nobody guards and processes for a long time.

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Based on study of relationship between the average quadric error and the surface curvature, a variable resolution surface reconstruction algorithm was proposed.

在研究平均二次誤差與曲面曲率關(guān)系的基礎(chǔ)上，提出了變分辨率的曲面重建算法人人曰。

A curve on a surface of revolution, formed by the intersection of the surface with a plane containing the axis of revolution.

二次曲面的由二次方程式所定義的幾何平面的亚欧综合在线，或與其有關(guān)的

A curve on a surface of revolution , formed by the intersection of the surface with a plane containing the axis of revolution .

為什么我們過去能在非常困難的情況下奮斗出來，戰(zhàn)勝千難萬險(xiǎn)使革命勝利呢

And the effects of casting speed on surface fluctuation,surface bareness,slag entrapment and removal of inclusions in the mold were investigated.

通過物理模擬研究FTSC結(jié)晶器內(nèi)的鋼液流動(dòng)行為黄页网在线观看免费视频，考察了拉速對(duì)結(jié)晶器內(nèi)液面波動(dòng)超薄丝袜脚交足免费播放、液面裸露、卷渣及夾雜物去除的影響作用男女互插在线观看。