z-minimal sets and their applications to theory of z-continuous posets 连续偏序集的应用
according to the theory of z-map model, the contour data is re-constructed in new sequence forming 3-axis parallel milling tool path 根据z-map模型的原理,用行列结构对边界点数据进行重新排列,从而得到3轴平行式加工刀轨。
the particle segregation in the joint region has n't been observed when tlp bonding of al mmcs using 10 m thickness copper foil, according with the theory of z . li . the effect of joint property is the oxidation on surface of the ai mmcs li等人在研究瞬间液相连接铝基复合材料的接头颗粒偏聚现象和机械性能时指出,采用合适的中间层厚度可以有效防止接头区域颗粒偏聚现象。
by the theory of z transformation of linear system and matrix, we proved the validation of the averaging filter method using in ietd to cancel oscillation . then we illustrate the disadvantage of using averaging filter and give a new averaging filter that we note as phase-modified averaging filter, which can reduce the disadvantage . at the end of this chapter, we study the potent of reducing the time-cost of ietd by taking account the short duration characteristics of incident impulse 本文第二章,首先简述了时域积分方程递推解法(ietd),然后推导了应用于旋转对称体的,能够减少计算量的ietd方法,重点阐述并应用线性系统的z变换理论和矩阵理论研究了ietd方法中遇到的稳定性问题,从理论上证明了平滑滤波技术的有效性,指出了它对计算精度的影响,并在分析的基础上提出了新的相位修正平滑滤波方法。