Warning: file_put_contents(/www/wwwroot/ppbbu/laei.cn/cache/82014d6073c0e84505fa770e0776d31e.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/laei.cn/index.php on line 58 mean extinction coefficient是什么意思，mean extinction coefficient的翻译，mean extinction coefficient音标、读音、用法和例句_按摩法牛津词典