基本解释：纵线,铅垂
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In this paper,the mathematical model of the vertical lines supported aerial triangulation has been established according to the theory of the vanishing point.根据灭点理论建立了铅垂线辅助空中三角测量理论模型,讨论了控制点的分布和旁向重叠度对附加铅垂线约束的空中三角测量的精度与可靠性的影响,最后结合实际数据对上述铅垂线辅助空中三角测量理论分析结果进行了试验验证。
The absolute orientation of aerial imagery over urban areas combined with vertical lines is discussed.依据灭点理论,推导了空间铅垂线与航空影像的空间姿态角之间的关系及其相应的误差方程式,并分析了铅垂线辅助的单像空间后方交会和单模型绝对定向中所需的控制点数。
In order to utilize the vertical lines into the application of aerial triangulation over urban areas, an effective auto extracting vertical lines arithmetic has been presented in the paper.为了将铅垂线应用于城区空中三角测量,通过对大比例尺航空影像中铅垂线特点的分析,提出了一种有效的铅垂线提取算法,即首先对航空影像进行必要的预处理并自动提取直线,然后使用累积法从提取直线中分离出铅垂线并确定像底点坐标,最后应用共点约束的最小二乘直线模板匹配算法进一步提高铅垂线的提取精度及像底点的交会精度。
test(sth)by using a plumb-line用铅垂线测（某物）.
adjust with a plumb line so as to make vertical.用铅垂线调整使得垂直。
conforming to the direction of a plumb line.和铅垂线的方向一样。
The plumB line is always perpendicular to the horizontal plane.铅垂线总是垂直于水平面的。
A device, such as a plumb line, used in marking the vertical from a given point.垂规，铅垂线一种装置，如铅垂线，用于从给定点标记竖直方向
a flat surface at right angles to a plumb line.一个与铅垂线绝对成直角的平面。
Bricklayers and carpenters often use plumb lines.瓦工和木工经常使用铅垂线。
Absolute Orientation of Aerial Imagery over Urban Areas Combined with Vertical Lines铅垂线辅助城区航空影像的绝对定向
Over the centuries it has begun leaning, until it is now many degrees off the perpendicular.几个世纪以来，它一直在倾斜，现在已偏离铅垂线许多度了。
between perpendiculars垂线间垂线间垂线间的
Lead and lead-antimony alloy wireGB/T1474-1988铅及铅锑合金线
Something vertical, as a line, plane, or circle.垂直物垂直的东西，比如垂直线，垂直面或垂直圆
A vertical or nearly vertical line or plane.垂直线，垂直面垂直或近似垂直的线或平面
"Hook, Line & Sinker""汽笛,电线与铅锤"
a straight body with a sharp point at the top.垂直的楼身加一个尖尖的顶（“铅笔型”）
A small, knoblike pendent object, such as a plumb bob.悬垂物小的球状悬挂物，如铅锤
In a vertical or perpendicular line.垂直地在一条垂直线或竖直线上
