n.横坐标(横线)
The experimental curve runs nearly parallel to the abscissa. 实验曲线几乎与模座标平行。
Y-coordinate direction, abscissa intermediate region. 纵坐标的正方向，横坐标的中间区域。
Use a minimum of ordinate and abscissa values so they do not run together. 使用最低限度的协调与横坐标值使他们不跑在一起。
The abscissa of all graphs shows the consecutive increasing packet ID of the generated packets. 系统的无缝切换的设计理念保证了切换时不会有数据包的丢失。
Therefore, on the complex plane, robust stability can be formulated by minimization of pseudospectra abscissa. 于是在复平面上，鲁棒稳定性问题就转化为伪谱横坐标（伪谱最右端的横坐标值）最小的优化问题。
