Warning: file_put_contents(): Only 0 of 6803 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/69228.com/index.php on line 55 mapping norm是什么意思，mapping norm的翻译，mapping norm音标、读音、用法和例句_魏碑心思朗文词典
By introducing weighted norm and using the Banach contraction mapping principle we obtain the existence of throughout positive solutions for the above equations. 通过引进加权范数及利用巴拿赫压缩映射原理，得到上面这两种方程始终正解的存在性。