When the projecting distances of two gauges on the incident wave direction equal half of the incident wave lengths or time it, there will be a singularproblem.
当两测点在入射波方向上的投影距离为入射波半波长的倍数时，该方法会出现奇异问题。
2
The charge on the conductor needs to be calculated while extracting distributed capacitance parameter of transmission lines, and generally there is the singularproblem of reentrant corners.
传输线电容参数提取过程中需要计算导体上的电量，而在电量计算过程中普遍存在着角点的奇异性问题。
3
This particular problem is quite typical in it organizations, so it's safe to say that the amount saved avoiding this singular issue could pay for a substantial part of a process improvement effort.