Warning: file_put_contents(/www/wwwroot/ppbbu/5356789.com/cache/5ebfd1fedc51fb11845cf4f08ce89b15.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/5356789.com/index.php on line 55 bunching space例句_bunching space英汉例句_bunching space双解例句_零六五六深蓝词典
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。