tangential equation

Discrete wave equation updated the tangential electric field value on the boundary of coarse and fine grid.

用离散波动方程更新粗细网格边界上的切向电场分量。

Using the equation, regarding the projection angle as a small quantity, neglecting the differentiation of the absolute value of the tangential velocity with respect to the time, the P.C. Chou formula was easily obtained.

利用爆轰驱动平板的抛射角方程，在小抛射角条件下，假设切向速度大小随时间的变化率为零，很容易得到周培基（P.C.Chou）公式。

In this paper, the fundamental formulas of oblique and orthographic axonometric projection are deduced by systematically using the analy-tical tracing method. The tangential equation to determine the shaft angles θ_1 and θ_2 in orthographic projection is obtained on this basis.

本文系统的用解析法推导了斜轴测投影和正轴测投影的基本公式的基础上，导出了正轴测投影中确定轴间角Q1和Q2的正切公式。

Solving high-order equation for building structure by tangential method

用切线法解建筑结构中的高次方程

Discrete wave equation updated tangential electric field value on the boundary of coarse and fine grid.

用离散波动方程更新粗细网格边界上的切向电场分量.