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仰角和俯角有什么用

更新时间: 2020-11-05 00:00:00     

1、仰角是往上看:当观察者抬头望一物件时,其视线与水平线的夹角称为仰角。

2、俯角是向下看:当观察者低头望一物件时,其视线与水平线的夹角称为俯角。俯角是在竖直面的水平线与向下递降线段之间的角度(朝下看时,视线与水平面夹角为俯角)。也指从测量员的仪器到照准点所观测到的地平线以下的垂直角。

关键词: 仰角 俯角 什么

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