自形的

Is mainly the realization of convolution and filter design.

主要是卷积运算的实现和滤波器设计。

Epidemic typhus is rare except during periods when municipal services are disrupted, such as during wars or natural disasters. Epidemic typhus is passed from human to human by the body louse.

流行性斑疹伤寒会在市政服务中断时出现，如战争和自然灾害时期，平时较为罕见，主要是由体虱在人与人之间传播的。