Warning: file_put_contents(/www/wwwroot/ppbbu/62383.com/cache/63ec9d19f91dc0c38304e11c744df15e.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/62383.com/index.php on line 55 relaxation-time approximation是什么意思，relaxation-time approximation的翻译，relaxation-time approximation音标、读音、用法和例句_流逝汉英词典