With the experimental data on the over-the-horizon microwave communication in China sea on summer day,the median level of signal,the fading amplitude,the fading depth and probability distribution are analysed.
利用我国东南海域夏季微波超视距通信的外场测试数据,统计分析了测试信号的中值电平、衰落幅度、衰落深度、概率分布及信道可靠度。
This article analyzed different reason for the amplitude attenuation of the acoustic emission,and used the AE testing device produced by PAC America to test the acoustic emission attenuation using a pipe with many complex features.
分析了引起声发射信号衰减的各种原因,采用美国PAC公司的声发射仪,对一个复杂特征管道中声发射信号的幅度衰减情况进行了试验测量,得出了不同管道特征对声发射信号幅度的衰减影响的结论,并提出相关的建议。
The attenuating range of CA D of blood supernatant in 10 of 13 cured pigs was higher than 2 at 15 days and all was higher than 2 at 30 days.
用吡喹酮治疗囊虫病猪 15头 ,经剖检证实治愈 13头 ,其中 10头在治疗后 15 d血清中 CA的衰减幅度大于 2 ,治疗 30 d后 13头猪血清 CA的衰减幅度大于 2 (其中 3头猪 CA转阴 ) ,治疗 6 0 d后 CA转阴猪达 10头 ;未治愈的 2头病猪 ,CA一直变化不大。
