查询词典 helicoidal surface

Utilize the technology of NURBS surface fitting, to sort the product appearance form, and then to reconstruct it. Through experiment, verify the result of using NURBS surface fitting technology to reconduct free surface can get the satisfactory product form without the need for high precision conditions.

利用NURBS由面拟合技术，将产品外观按形态先进行分类，再据此对产品外形进行重构通过实验，验证了在不需要较高精度的条件下，利用NURBS曲面拟合技术对自由曲面进行重构，能获得令人满意的产品形态。

The mixed coats of Mn, Ti and Cr were applied to α-Al2O3insulated ceramics surface,followed by heat treatment under special conditions. The secondary electron emission coefficient, surface resistively, XRD and surface morphology of the samples were observed.

用不同配方的Mn、Cr、Ti混合物涂覆α-Al2O3绝缘陶瓷表面，在适当条件下进行热退火处理，观测了各样品的二次电子发射系数，表面电阻率，XRD。

The analysis of the mechanism of the effect of the surface type on atmosphere shows that the surface impact become gradually weakens. This indicates that stable atmosphere restrains the surface disturbance, and has the restorable ability.

通过对地表类型影响大气的机制分析，表明随着模拟时间的增加，地表的影响可能逐渐减弱，这显示出处于稳定状态的大气，可以抑制地表产生的这种扰动作用，表现出大气对地表类型改变产生扰动的一种自我恢复能力。

The semiconductor nanocrystalline surface is modified by using organic overlay method. As an organic overlay,-methacrylic restrains the reuniter between the grains in the latter process. Furthermore, it can combine with empty bond of atom at grain surface state and eliminate the surface state.

应用有机包覆的方法对纳米颗粒进行了表面修饰，作为包覆剂的α-甲基丙烯酸有效抑制了后处理工艺中纳米颗粒间的团聚现象，在纳米颗粒表面形成帽层，并与粒子表面态的原子悬键进行配位，这对消除表面态是非常有益的。

Accordingly three DNA computing models, the solution-based model, surface-based model and the combination of solution and surface-based model, were presented to solve 0-1 programming problem in the study. The advantages of massive parallelism, high-density storage and potential robotization of solution-based and surface-based model were well embodied and their shortages such as timewasting operations and less massive parallelism were also avoided by all means in these models.

本文用DNA计算解决规划问题的研究中，对0-1 规划问题分别给出了基于溶液计算、表面计算和溶液表面结合计算的三类DNA 计算模型，分别强调了溶液计算的高度并行和高存储性，表面计算的高自动化程度等优点，并进一步利用溶液与表面计算相结合的方法来避免各自的缺点，突出其优点，生物实验对溶液与表面计算相结合的模型进行了验证。

The lowest surface tension of N_xB solution was better at 25℃, and lowest surface tension would down with carbon . cmc( critical micelle concentration) and γ_ in N_(12)B are 4.1 × 10~(-4)mol/L, 24.5 mN.m~(-1),what was smaller than LAS . The cmc of N_(12)B- NaCl are down with NaCl up.The surface tension and cmc of N_(12)B and N_(16)B are higher than that of N_(12)OB and N_(16)OB because of hydrophilic group ,but that of N_(12)B is lower than that of N_(16)B because of hydrophobic group .5. The borate structure and semipolar bond were studied in different pH by infrared spectrum .It indicated that N_xB and N_xOB have not semipolar bond at pH

4、25℃，N_xB系列都有较低的表面张力，并随碳原子数的增加而最低表面张力下降。N_(12)B比同碳原子数的十二烷基苯磺酸钠的最低表面张力34.5mN／m低，且临界胶束浓度为4.1×10~(-5)mol／L，也比LAS低，且随着NaCl浓度的增加而略有下降，比较N_(12)B和N_(16)B，由于C_(16)疏水基的异构体使N_(12)B的临界胶束浓度和临界胶束浓度时的表面张力γ_(cmc都低，由于增加了亲水基团使得N_(12)OB和N_(16)OB的表面张力和临界胶束浓度都要高于N_(12)B和N_(16)B。

In the dry sliding experiments of composites, friction coefficients decreased with the increase of load. Plastic deformation happened in the worn surface where Fe element was found, so PAM micro-fiber supported part of the load and prevented the further deformation. On the condition of high speed and high load, the worn surface of PAM1/nylon 6 composites was nearly melted and formed comparative uniform transfer on the surface of steel, which accounted for the rather low wear mass loss. The infrared analysis showed that the a small quantity of transition of crystal form from α into γ of nylon and its composites happened during the friction because of the high temperature and strong sheering strength.

通过对复合材料耐磨性能研究表明：复合材料的摩擦系数随载荷的增加而逐步下降，且磨损表面有明显的塑性变形；从能谱分析结果来看，复合材料表面有Fe的存在，表明PAM微纤承受了部分载荷，并阻止了基体的进一步塑性变形及粘着转移；在高速高载时，PAM1/尼龙6磨损表面处于粘流态，并在钢环表面形成了连续的转移膜，表现出较好的耐磨损性能，且在高温和强剪切力的作用下，材料基体发生了少量的α晶体向γ晶体的转移。

A mode of the directionally growth of PAn on the surface of NaFe〓P〓rod-like particle was suggested. Some of aniline molecules in the reactants are fixed on the surface of skutterudite particles before the beginning of the polymerization. Other aniline molecules link with the aniline molecules fixed on the surface of skutterudite and form liner chains when the initiater is added into the reactants.

提出了聚苯胺在棒状方钴矿NaFe〓P〓材料表面定向生长的物理化学模型：在表面配位键的作用下方钴矿晶须表面首先附着了一层苯胺单体，在引发剂的作用下溶液中的苯胺分子在这层单体上定向聚合，形成了定向聚苯胺线性分子。

The shaft is mounted in the pump housing by axially spaced conical bearings, each bearing including a first element fixed on the shaft with a first conical bearing surface concentric with the axis, a coacting second element carried by the housing with a second conical bearing surface concentric with the axis and slidably engaging the first bearing surface and a spring forcing the elements together.

所述轴由轴向地间隔开的锥形轴承安装在所述的泵外壳中，每一轴承包括：第一元件，固定在所述轴上，具有与所述轴线同心的第一锥形轴承表面；共同作用的第二元件，由泵外壳承载，具有与所述轴线同心的第二锥形轴承表面，该第二锥形轴承表面可滑动地啮合所述第一轴承表面；和弹簧，将所述元件压在一起。

A forming die set, comprising: an extendable punch having a first impact surface comprising a plurality of piercing points; a die body containing an aperture adapted to receive said punch; a fixed opposing post having a second impact surface positioned within said aperture, said opposing post recessed below a surface of said die body; at least one forming bushing slideably engaging said opposing post and positioned between said opposing post and said die body; and at least one forming bushing actuator supporting said at least one forming bushing.

形成一钢模组，包含：一个可扩充的打洞器让一种第一种冲击升至水面包含一个刺骨点的多数；一个包含一个孔的一钢模身体适应接受说打洞器；有一个第二个冲击表面的固定反对职位放置在说的孔里面，说反对被在一个说的一钢模身体的表面下面作凹处的职位；至少一个形成桥衬可滑动动人说反对职位而且在说反对职位之间放置而且说一钢模身体而且至少一个支援的形成桥衬主动器至少说一个形成桥衬。

Mr. Putin said there were signs of genocide against the Ossetian people.

普京说，有迹象表明对南奥塞梯人进行了种族清洗。

What I'm trying to say, Tristan is...

特瑞斯坦。我想说的是。