Warning: file_put_contents(/www/wwwroot/zidian/oumou.cn/cache/a160aeae348120b766b14dea1704c64e.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/oumou.cn/index.php on line 58 mapping norm是什么意思，mapping norm的翻译，mapping norm音标、读音、用法和例句_欧米惠必应词典
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。