多项式的计算器，可以用来加减乘除各类多项式并得出正确结果-Polynomial calculator can be used all kinds of polynomial addition and subtraction multiplication and division and reached a correct result
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001240s ]
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SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001084s ]
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