Points out that the propagational derection and vibration surface of ordinary and extraordinary ray in crystal can be determined by the characters of wave surface in crystal and Huygens,Construction.

本文研究單色自然光入射到單軸晶體后產(chǎn)生雙折射現(xiàn)象在线视频啪，所得的O光和e光在晶體內(nèi)的傳播方向和振動面，可利用晶體中波面的特點和惠更斯作圖法來確定十八禁啪啪污污网站免费，使讀者對這一問題有更進一步的認識和理解欧美在线xx。

The method, by making use of Least Square Support Vector Machine well fits the star image intensity surface over the neighborhood, and determines the maximal extremal points on the fitted surface, and then obtains possible star centers.

提出一種新的星圖中星獲取算法－極值點法，利用最小二乘向量機對原始星圖的局部區(qū)域作灰度曲面最佳擬合综合色久免费视频，在擬合曲面上求解灰度極大值的像素點，獲得星的中心點的初步位置116美女极品A级毛片。

Extremal mappings have been one of the main topics in the theory of quasiconformal mappings, n the section 4, we consider the extremal mappings on the surface Rwhere every Ri is a hyperbolic Riemann surface, Ri Rj =,i j,I is a non-empty indexset.

擬共形映射的極值問題是擬共形映射理論中的又一重要課題www.人人莫人人，在文章的第四章中，我們將考慮曲面R=U R_i i∈I上的極值問題9999国产精品视频，其中每個R為雙曲Riemman曲面美女被喂J8免费网站在线观看，R_i∩R_j=φ，i≠jjizzjizz国产精品，I為非空指標集日韩教师另类自拍视频在线观看免费。

The Pd-Cu/C catalysts were shown to have the face centered cubic crystal structure. This could indicate that the addition of Cu shortened the Pd-Pd distances in the crystal lattice, and therefore –HO(subscript 2ads) and O-O could be better adsorbed on the surface of the catalyst. When NaBH4 was used as the reducing agent, and the atomic ratio of Pd to Cu was 3:1, the resulting catalysts had an average particle size of 3. 4nm and showed the best catalytic performance. The electrochemical active surface are a of Pd3Cu/C was 38.9m^2/gPd and the oxidation reduction reaction activity of the Pd3Cu/C catalyst was much higher than that of the Pd/C catalyst. The electrochemical activity of the Pd3Cu/C catalyst was comparable to that of a commercial Pt/C catalyst.

結(jié)果表明：催化劑中Pd與Cu的物質(zhì)的量之比與預設(shè)值相近，Pd和Cu基本被全部還原91中国老熟女的大屁股；Pd-Cu/C催化劑為面心立方結(jié)構(gòu)专门看黄色视频，元素銅的加入使催化劑的Pd-Pd間距縮小，從而HO(下標 2 ads)和OO鍵能更好地吸附在催化劑金屬表面激情图库；當采用NaBH4為還原劑欧美人又色又爽的A片，Pd與Cu物質(zhì)的量比為3：1時，催化劑(Pd3Cu/C)的平均粒徑為3.4 nm免费观看的黄色视频网址，催化劑的催化性能最好国产区一级A片视频免费看，電化學活性表面積EAS達到38.9平方公尺/gPd一级A片偷窥精品，電化學性能較Pd/C催化劑有很大提高，接近Pt/C商用催化劑想要免费毛片A。

The method of designing artificial knee joints through surface matching between outer face of the replaced knee joint and femoral surface of the massive allogenic bone is proposed to simplify the clinic operation.

提出了依據(jù)手術(shù)切除部位膝關(guān)節(jié)的外表面與異體骨的股骨端面的曲面匹配結(jié)果來設(shè)計人工膝關(guān)節(jié)面的方法女生被操免费网站，簡化了手術(shù)方案；完成了髓內(nèi)針﹑融合籠及其輔助部分的研制欧美一级高潮片黑人录像；對髓內(nèi)針的定位位置和方向国产免费观看黄页影视网站大全，髓內(nèi)針和融合籠的聯(lián)接方式進行了深入的研究，提出了相應的解決方案亚洲Av片久久综合网。

The upper member of the protective cover generally overlies the upwardly facing surface of the robot arm while the peripherally extending sidewall generally overlies the outwardly facing surface of the peripherally extending sidewall. In similar fashion, a protective plate of thin-walled plastic material impervious to fluids may also be removably attached to the downwardly facing surfaces of the robot arm and includes a peripheral rim generally coextensive with the peripherally extending sidewall of the link and proximate the lower rim of the protective cover when both the protective cover and the protective plate are so attached.

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What is surface faulting or surface rupture in an earthquake?

什么是地表斷層或者地表斷裂

The potential windows in acidic, neutral or alkaline medium were respectively 4.4 V, 4.0 V and 3.0 V. In the electrolyte including Ferri/Ferrocyanide, the electrode surface kept good activity, and the electrochemical reaction occurring on the surface was a diffusion-controlled reaction, with good quasi-reversibility.

在鐵氰化鉀電解液中AAA黄色网址，金剛石膜電極表面在反應過程中始終保持良好的活性，在表面進行的電化學反應具有良好的準可逆性91视频久久久。

Bearing bore or outside the surface and the ferrule end face connected to a ring surface.

軸承內(nèi)孔或外表面與套圈一端面連接的套圈表面婷婷五月丁香社。

To improve the imaging quality of CCD camera and make the lens small in size,compact in structure,the wide field of view optical lens with the standard quadric surface and even aspheric surface was designed.

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