电动车显示速度仪表的原理是啥

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select * from tbl_Articles WHERE ArticleID=1468799 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1468799 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1468799 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1068334,1066924,1054934,1125189,1065697,1065533,1127161,1016441,1128237,1081835,1048236,1054612,1075901,1049048,1090541,1111368,2918219,1077100,1068774,1064613,1063917,1104745,1093923,1045805,1048422,1117580,1062580,1066132,1130152,1051075) ORDER BY field (ArticleID,1068334,1066924,1054934,1125189,1065697,1065533,1127161,1016441,1128237,1081835,1048236,1054612,1075901,1049048,1090541,1111368,2918219,1077100,1068774,1064613,1063917,1104745,1093923,1045805,1048422,1117580,1062580,1066132,1130152,1051075)