如何理解哈密顿量

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SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(667842,1529613,1524045,362256,214157,461434,935918,1052643,1132487,1379000,1729211,680549,1078791,1430470,530126,1130844,1079051,1075967,1621179,326075,615984,1095850,1576565,993145,1067543,1079255,535950,1048560,304172,349222) ORDER BY field (ArticleID,667842,1529613,1524045,362256,214157,461434,935918,1052643,1132487,1379000,1729211,680549,1078791,1430470,530126,1130844,1079051,1075967,1621179,326075,615984,1095850,1576565,993145,1067543,1079255,535950,1048560,304172,349222)