Warning: file_put_contents(/home/www/wwwroot/zidian/69228.com/cache/92ee3067f48e0805892c369893de3e8d.txt): failed to open stream: No space left on device in /home/www/wwwroot/zidian/69228.com/index.php on line 55 91九色国产社区在线观看,日本二区三区欧美亚洲国产
Moreover, a necessary and sufficientcondition for an abelian group to have test elements is specified.Also, the test elements are determined. 作為應(yīng)用，給出了任意阿貝爾群有檢驗元素的充分必要條件，并確定了其檢驗元素。