Warning: file_put_contents(/www/wwwroot/ppbbbu/5356789.com/cache/07cccfb70d2dcf49731d914aa1ead8cd.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/5356789.com/index.php on line 55 draa是什么意思，draa的翻译，draa音标、读音、用法和例句_零六五六深蓝词典
If it could not be satisfied, the vibration serviceability should be evaluated by a dynamic response analysis approach (DRAA). 不能达到频率要求时，再进一步采用动力响应法分析。