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.
用于492Q发动机
JCQ净化
采用稀土小球为催化剂，用正交频带加权优化法优选
构参数，
得良好、净化性能。
OFDM (Orthogonal Frequency Division Multiplexing) is a method that can combat multipaths, fully use the frequency band and has high data rate, and has a promising future in UWA communication.
摘要正交频分复用(OFDM)技术具有抗多径、频带利用充分、传输数据率高优点，在水通信中具有重要发展前景。
明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件
观点；若发现问题，欢迎向我们指正。
