化合价为什么有正价和负价

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SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1071089,1106002,1071147,1034501,1111800,1066066,1080529,1068330,1058349,1130342,1088612,1126740,1082193,1084603,1122098,1079131,1128283,1082980,1128769,1109719,1083473,1126482,1131307,1044899,1117892,1110405,1055758,1072274,1069743,1132115) ORDER BY field (ArticleID,1071089,1106002,1071147,1034501,1111800,1066066,1080529,1068330,1058349,1130342,1088612,1126740,1082193,1084603,1122098,1079131,1128283,1082980,1128769,1109719,1083473,1126482,1131307,1044899,1117892,1110405,1055758,1072274,1069743,1132115)