Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/cf46be08d437785c388388c160f4bf26.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 friction heat gain是什么意思，friction heat gain的翻译，friction heat gain音标、读音、用法和例句_沉淀汉英词典