使形状化

The proposed method could not only efficiently tell between the inward and outward region of the closed curve or surface, but also solve the numerical stability problems of other methods. These superiorities have a significant impact in improving the computational efficiency and stability of level set methods.

所提出的算法能够区分任意形状的闭合曲线或曲面的内外部，改进了以往初始化算法的数值不稳定缺陷，从而使水平集方法的计算效率和稳定性有了显著的提高。

During 1980 to 2002, the whole patch's quantity increases and has the phenomenon of crumble. In addition, the distribution of each patch becomes more disperse gradually, and the enchase decreases. During 2002 to 2006, after the creek engineering project has been put in place for several years, the whole landscape structure starts to become in ordered. Proven by the bird research data, higher sample are mostly scatter along the river side. Therefore, the creek engineer is able to stabilize our environment, and the big patch is increasing because of the plan of patch, as a result, the variety of birds in the testing area increases by a significant number.

於1980 ~ 2002年间，在人为大力开发加上天然风灾肆虐下，整体块区之数量渐增且形状有呈现破碎化之现象，而各类别块区之分布逐渐分散，且镶嵌度亦有下降之情形。2002 ~ 2006年，经逐年之野溪工程整治，整体景观结构有朝向规整化的情形，且以鸟类调查资料验证，丰度较高之样点大多沿著溪流分布，故可得知，野溪工程之施作对环境有稳定之功能，且因块区之规整使大块区数量增加，亦使研究试区之鸟类生态丰富度增加。

Preferential oxidation of Ti on NiTi alloy surface has been observed and was consistent with the experimental result and the free energy of formation A G?(298K) of NiO, TiO, TiO2. Mulliken population and the partial density of state analysis showed that the interaction between Ti and O atoms was mainly donated by O 2p and Ti 4s orbital and O 2p and Ti 3d, 4s, 4p hybridization orbital. The electron structure in NiTi bulk material was not altered during 62 molecule adsorption process and the surface passivation oxide formation.

进一步对钛与氧之间相互作用本质的研究表明，O 2p轨道和Ti 4s轨道以及O 2p轨道和Ti 3d 4s 4p杂化轨道间的相互作用是NiTi合金表面氧分子吸附的驱动力，在此过程中，NiTi合金的体相结构没有发生变化，从而保证了其一系列力学性能和形状记忆特性在表面氧化后不发生明显的变化，使表面改性的工作可以安全、可靠的完成而不影响其植入人体后发挥正常的生理功能。

Mulliken population and the partial density of state analysis showed that the interaction between Ti and O atoms was mainly donated by O 2p and Ti 4s orbital and O 2p and Ti 3d, 4s, 4p hybridization orbital. The electron structure in NiTi bulk material was not altered during O〓 molecule adsorption process and the surface passivation oxide formation. Thus the mechanical properties and shape memory effect would not change after NiTi alloy surface oxidation. Stable microstructure demonstrates reliability of implant material.

进一步对钛与氧之间相互作用本质的研究表明，O 2p轨道和Ti 4s轨道以及O 2p轨道和Ti 3d 4s 4p杂化轨道间的相互作用是NiTi合金表面氧分子吸附的驱动力，在此过程中，NiTi合金的体相结构没有发生变化，从而保证了其一系列力学性能和形状记忆特性在表面氧化后不发生明显的变化，使表面改性的工作可以安全、可靠的完成而不影响其植入人体后发挥正常的生理功能。

Four methods for evaluating circularity error. least-squares method for evaluating cylindricity error. 3.Using language of VC++, a software of form error evaluating is developed. Module structure is adopt in this software and every element has one module.

用VC++开发了形状误差的评定软件，软件采用功能模块结构，每种元素均设计为一个独立的模块，为使评定结果更加直观，采用OpenGL对处理的结果进行了可视化处理，结果图形可以随意转动和缩放，以方便观察。

The results show that higher zircon addition resists the densification of fused magnesia zirconia materials,and the zircon addition influences the crystalline size of periclase,pore size and the pore structure significantly.

结果表明，配料中锆英砂含量的增加使熔浆的粘度上升，合成料难以致密化。锆英砂配入量对ZrO2晶形及晶粒尺寸影响不大，但明显影响方镁石的晶形、晶粒尺寸以及气孔的形状和尺寸。

The approach primarily adopts patch-based texture synthesis flow, synthesizing progressively-variant textures to reflect the diversification trend of vector fields.

在纹理合成过程中利用向量场作为指导，生成反映向量场大小和方向变化的合成结果·采用块纹理合成的流程，在对向量场合成块均匀划分的基础上，通过进一步的自适应分割，将向量场划分成为不同大小和不同形状的最终合成块，使之与向量场的变化趋势相吻合·对向量变化过于剧烈的区域，则采用点合成的方式进行纹理合成，以保证合成效果的平滑·实验表明，文中的方法可以实现快速而高质量的向量场可视化

The online normalization of the interference spectrum in frequency domain is implemented with Hilbert transform.

通过Hilbert变换来实现频率域干涉光谱信号的在线归一化，使归一化过程不受光源光谱形状以及谱峰位置变化的影响。

Based on the characteristics of parameterized design and key technologies of knowledge based engineering, and specially according to the characteristics of the construction, figure, assembly-parameter of bicycle frame design, the article has achieved repeated using of experiential parameter and knowledge by adopting methods such as automatic reading experiential datasheet, computing parameter by making use of program, manual data-input or modifying and so on. Based on analyzing the characteristics of Rear End design and the associated characteristics with Chain Stay and Seat Stay, different design methods are analyzed in detail, and rapidly assembling of Rear End, Chain Stay and Seat Stay is achieved by using the method of combining top-down-assembly with down-top-assembly method. Based on analyzing special technologies and UDF characteristics, the repeated using of different sectional shapes by using UDF technology on the tube section design is also achieved, and this will greatly shorten the time spent on fixing the dimensions and orientations on sketches.

在探讨了参数化设计技术特点和知识工程关键技术的基础上，针对自行车车架设计中的结构、形状、装配参数特点，分别采用了读入经验数据表、参数程序求解、手工录入或修改方法实现车架设计经验参数和知识的重复利用；在分析自行车后叉片设计特点及与平、立叉的关联特性的基础上，对不同的设计方案进行了详细分析，并采用自顶向下和自底向上相结合的方法，实现了后叉片的快速装配定位与平、立叉设计相关联；在分析了特征技术和UDF特点的基础上，将UDF用于管件截面的设计上，使各种截面形状能不断重复利用，大大节省了约束草图尺寸和位置的时间。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。