Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/e0428102bd4b673a2652bc9e1cf62ff9.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 theoretical deflection coefficient是什么意思，theoretical deflection coefficient的翻译，theoretical deflection coefficient音标、读音、用法和例句_沉淀汉英词典