天气预报15天查询> 数码> dhd全站仪是什么意思

dhd全站仪是什么意思

更新时间: 2019-04-17 00:00:00     

表示站点和所测点的距离与站点和放样点距离的差。比如该站点是A输入放点B坐标进去,然后将棱镜放在C点,如果按照准棱镜来测量,当仪器显示dhd等于+1.235米时,就表示棱镜需要前进1.235米。如果仪器上面显示dhd等于-1.235米,这时棱镜需要向后退1.35米。

关键词: dhd 全站 什么 意思

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-1116903/ | 耗时:0.7899 s | 内存:1.89 MB | 查询:5 | 缓存读取:4 写入:1 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=1116903 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1116903 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1116903 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1100945,1091938,1090380,1098675,1095003,1115159,1104262,1109180,1073120,1122593,1094879,1090258,1084741,1115863,1071984,1103425,1091681,1112714,1090853,1099831,1102290,1119776,1097149,1070528,1104469,1110357,1101393,1087867,1112232,1113742) ORDER BY field (ArticleID,1100945,1091938,1090380,1098675,1095003,1115159,1104262,1109180,1073120,1122593,1094879,1090258,1084741,1115863,1071984,1103425,1091681,1112714,1090853,1099831,1102290,1119776,1097149,1070528,1104469,1110357,1101393,1087867,1112232,1113742)
SELECT ArticleID,Title FROM tbl_Articles where CategoryID=90004 ORDER BY ArticleID DESC LIMIT 20