Warning: file_put_contents(): Only 0 of 7288 bytes written, possibly out of free disk space in /home/www/wwwroot/ndsq.cn/index.php on line 55 bunching space例句_bunching space英汉例句_bunching space双解例句_开心英文字典_柠咚词
The role of the space charge wave is that it makes bunching reduce at small signal, but it makes bunching enhance at large signal. 并且分析了空间电荷波对电子束群聚的影响：在小信号时使群聚减小；在大信号时使群聚增强。