imaginary axis

基本解释

The selection of weighting function matrixes and the controller design method for a plant with a pole on imaginary axis is discussed in detail.
详细讨论加权函数阵的选取方法，以及被控对象模型中含有一个积分环节控制器的设计方法。
The symmetric values about the imaginary axis of zero-poles which the unstable process lies in the open and closed right-half plane are defined as their mirror-injection.
非稳定过程在开右半平面的零极点关于虚轴的对称值称为该零极点的镜像映射。
The geometrical concept is to make a lot of parallel lines of the imaginary axis in the complex plane, and to decide the points which satisfy both the root loci and the parallel lines by the computer.
其几何意义是，在复平面上作一系列平行于虚轴的直线，用计算机求解这一系列直线与根轨迹的交点。

And, as Euler's successor, Carl Friedrich Gauss, was to discover, if you plot real numbers on one axis of a graph and imaginary ones on the other, you create a plane that represents both sorts of numbers.
ECONOMIST: Benoît Mandelbrot
Complex numbers, which have a real and an imaginary part added together, are the points on this plane that do not lie on either axis.
ECONOMIST: Benoît Mandelbrot