Warning: file_put_contents(): Only 0 of 5999 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 DIFI例句_DIFI英汉例句_DIFI双解例句_沉淀汉英词典
Pre-filtering ratio is changable according to difi erent demands and the precision of calculation is improved in this design. 采用这种方法研制的预处理板,预滤波比可以根据不同的需要灵活地改变,运算精度也大大地提高。