Warning: file_put_contents(/www/wwwroot/ppbbu/80125.cn/cache/d646a30b9695d1f0ad305aa0e51e2e92.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/80125.cn/index.php on line 58 rat-race mixer例句_rat-race mixer英汉例句_rat-race mixer双解例句_食材铺反向词典
For the limitations of the bandwidth and precision of manufacture, rat-race upper-sideband balanced mixer is utilized in order to realize up conversion. 出于工作带宽和加工精度等方面的因素的考虑，设计采用的是环形电桥单边带平衡混频器来实现上变频。