The fft inversion method is fit for reconstruction of density distribution with sharp peaks and complex shape . the results of numerical simulations of this method show high inversion accuracy and fast calculation speed 快速傅立叶变换法适合于重建具有陡峭波峰和复杂形状的等离子体密度分布，数值模拟的结果表明该方法具有计算精度高和速度快的特点。
Based on the interface capturing methods , the fluid dynamic programs have capabilities of dealing with the complex interfaces , unforeseeing topology changes , and extending easily to simulate 3d problems 根据本文给出的界面捕捉法方法编制的二维、三维多介质流体动力学程序，具有处理复杂形状界面及拓朴性质变化不可预见的能力，而且编程简单，容易实现。
By means of the analysis on motion equation of simple pendulum , a method for testing the moment of inertia of a complex shaped rigid - body moving around a fixed axle under the condition of not knowing the barycentric position of the object was obtained 摘要通过对单摆运动方程的分析，得到了未知物体质心位置条件下测试复杂形状刚体绕定轴转动惯量的方法。
The method of moment ( mom ) is an exact numerical method for the analyses of electromagnetic characteristics of complex objects , but the efficiency is lower , so it is difficult in solving the scattering of electrically large complex cavities 矩量法( mom )虽然能够精确计算复杂形状目标的电磁特性,但其计算效率较低,难以解决电大尺寸复杂腔体的电磁问题。
Technical supporting : new materials including high strength and high wear resistance carbides , carbides and diamond multi materials , manufacturing technologies including complicated shapes , precision press , cam etc 技术支撑：新材料技术，特别高强度高韧性高耐磨合金，硬质合金/金刚石复合材料；产品制造技术，主要是复杂形状齿（片）的、精密成型技术，牙轮钻集成制造技术。
In the case of plastic formed products , technologies are in demand that allow companies to manufacture complicated shapes with high precision in a shorter time and at a lower cost , while giving form to the user company s own excellent technology 在产业技术革新飞速发展的今天.即使是塑料成品所追求的技术,也是通过高精度和快速低成本化，靠模具将技术融入具有复杂形状的产品中的。
On the other hand , water jet machining is no contact with parts , flexible , reasonably precise , narrow kerf width , less waste of materials , no contamination , easy to integrate cnc to precisely cut any materials with complicated shapes 另一方面，水射流切割无（机械）接触，适应性好、切割表面精度高、切缝窄、材料损耗少、清洁无污染，配合数控执行机构可精确切割加工任意复杂形状工件。
The author proposed a new method called gliding adaptive smoothing in this thesis , which avoided the crossing of isolines efficiently and removed corners of isolines as well . these phenomenons usually occur unexpectedly in conventional processing 在等深线平滑问题中，提出了一种处理复杂形状曲线的自适应动态平滑方法，解决了常规曲线平滑方法在处理复杂的等深线时出现的若干问题。
A measuring technique of geometric accuracy for the cross - sectional contours based on their shapes and centroids is presented , and the feature points are generated according to the offset value of each segment of a cross - sectional contour 摘要以切层轮廓的形状因子和几何形心作为轮廓精度的评价参数，根据各轮廓边的偏置量自动拾取轮廓的特征点，尤其适合得到具有复杂形状的切层轮廓特征点。
This dissertation is focused on the radiation problems of various kinds of wire antennas mounted on the complex - shaped pec platform and the scattering problems of complex - shaped electrically - large pec targets based on the theory of method of moments 本文主要应用基于电场积分方程( efie )的矩量法( mom )研究复杂形状的金属载体上多种线天线的电磁辐射问题以及复杂形状金属目标的电磁散射问题。
