JCQ depurant-muffler is adopted on 49ZQ engine using small rare-earth element balls as catalyst and took the method of quadrature frequency band optimization to opetmize the configuration parameters.
于492Q发动机的JCQ净化
声器采

小球为催化剂,

频带加权优化法优选
声器结构参数,取得良好的
声、净化性能。



度编码不
们拖着雪橇
时候,

人交流、试验无线电技术,甚至在灾难期间提供紧急通讯服务。


