查询词典 developable surface

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.

拟共形映射的极值问题是拟共形映射理论中的又一重要课题，在文章的第四章中，我们将考虑曲面R=U R_i i∈I上的极值问题，其中每个R为双曲Riemman曲面，R_i∩R_j=φ，i≠j，I为非空指标集。

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.

结果表明：催化剂中Pd与Cu的物质的量之比与预设值相近，Pd和Cu基本被全部还原；Pd-Cu/C催化剂为面心立方结构，元素铜的加入使催化剂的Pd-Pd间距缩小，从而HO(下标 2 ads)和OO键能更好地吸附在催化剂金属表面；当采用NaBH4为还原剂，Pd与Cu物质的量比为3：1时，催化剂(Pd3Cu/C)的平均粒径为3.4 nm，催化剂的催化性能最好，电化学活性表面积EAS达到38.9平方公尺/gPd，电化学性能较Pd/C催化剂有很大提高，接近Pt/C商用催化剂。

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.

提出了依据手术切除部位膝关节的外表面与异体骨的股骨端面的曲面匹配结果来设计人工膝关节面的方法，简化了手术方案；完成了髓内针﹑融合笼及其辅助部分的研制；对髓内针的定位位置和方向，髓内针和融合笼的联接方式进行了深入的研究，提出了相应的解决方案。

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.

以相似的方式，一个由液体不能透过的薄壁塑料制成并且也被可拆卸地固定在该自动臂的下工作面(34)上的保护板(46)，该保护板包括一个周边边缘(48)，当保护盖(38)和保护板(46)都这样地固定在该自动臂上时，该周边边缘大体上与该连杆的沿周边方向延伸的侧壁(36)共同地延伸，并且靠近该保护盖的下边缘。

What is surface faulting or surface rupture in an earthquake?

什么是地表断层或者地表断裂

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.

在铁氰化钾电解液中，金刚石膜电极表面在反应过程中始终保持良好的活性，在表面进行的电化学反应具有良好的准可逆性。

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

轴承内孔或外表面与套圈一端面连接的套圈表面。

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.

为提高CCD摄像机的成像质量，同时使镜头结构紧凑、小型化，在大视场光学镜头的设计中，引入标准二次曲面和偶次非球面。

The article gave empHasis to surface modification of acetate fiber, increase the specific surface area and improve the filtration of acetate filter tip through the technique of cellulase enzyme and low temperature plasma. Therefore, a new approach to reduce tar and harm of cigarette was put forward.

论文通过生物酶技术和等离子体处理技术，着重从滤嘴用醋酸纤维表面改性出发，在提高纤维比表面积的同时，可进一步提高醋酸纤维滤嘴过滤性能，从而为卷烟降焦减害提供了新途径。

According to experts, wood veneer in the production of solid wood will be cut to about 2 mm thick pieces of wood, with a special adhesive, attached to the furniture surface, and then by painting, UV baked, characterized by a smooth touch, knock on wood buckle with a finger thick plate has a sense of clarity but the irregular surface of wood, in the plate corners can be vaguely seen around 1 mm veneer.

专家介绍，实木贴面在制作中将实木切成约2毫米厚的木片，经特殊粘连，贴在家具表面，再经上漆，紫外线烘烤而成，特点为触摸光滑，用手指扣敲木板有厚实感，表面木纹清晰但不规则，在板块转角处可隐约看见1毫米左右的木皮。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。