The pent-up demand is starting to filter through, though it is more a trickle than a flood.
潜在的需求正在显露端倪，尽管他们比较洪水而言更像水滴。
2
In the design of filter, especially for the real time signal processing, the demand on the filter performance is not as high as that on the filter velocity.
在滤波器设计中，特别是实时信号处理场合，有时对滤波器的性能要求并不高，但对处理速度要求高。
3
Theoretic analysis and operation results confirm that the filter can resolve the demand of harmonic restraint and reactive power compensation effectively, and has good engineering application effect.