Warning: file_put_contents(/www/wwwroot/ppbbbu/202081.com/cache/2b3b1cc060716e32658020fd33391b6d.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/202081.com/index.php on line 55 mapping norm例句_mapping norm英汉例句_mapping norm双解例句_2020年的事情英文词典
By introducing weighted norm and using the Banach contraction mapping principle we obtain the existence of throughout positive solutions for the above equations. 通過引進加權範數及利用巴拿赫壓縮映射原理，得到上麪這兩種方程始終正解的存在性。