直线与平面的夹角是怎样定义的

页面:/news/view-365103/ | 耗时:1.0106 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=365103 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=365103 LIMIT 0,1
select * from tbl_Articles_sphinx where id=365103 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1057774,1063735,1071701,1055361,993285,1125522,1059801,1064861,993213,1057178,1051283,1070824,1079546,1044442,1128475,1069677,1056832,1133093,1064553,1066704,1126414,1459281,1077100,1051425,1047441,988905,1132537,1055824,1048236,1085616) ORDER BY field (ArticleID,1057774,1063735,1071701,1055361,993285,1125522,1059801,1064861,993213,1057178,1051283,1070824,1079546,1044442,1128475,1069677,1056832,1133093,1064553,1066704,1126414,1459281,1077100,1051425,1047441,988905,1132537,1055824,1048236,1085616)