Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/e9de5a5090ab49163ef0f75185d167ba.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 kirchhoff formulation是什么意思，kirchhoff formulation的翻译，kirchhoff formulation音标、读音、用法和例句_沉淀汉英词典