alidade
alidade
al.i.dade AHD[²l“¹-d³d”] 也作 al.i.dad [-d²d”] DJ[6#l!7de!d] 也作 al.i.dad [-7d#d] KK[6#l!7ded] 也作 al.i.dad [-7d#d]
n.（名词）
1.An indicator or a sighting apparatus on a plane table, used in angular measurement.
旋标装置：飞机控制板上的指示器或观测仪，用来测量角度
2.A topographic surveying and mapping instrument used for determining directions, consisting of a telescope and attached parts.
照准仪：用来确定方向的地形测量和绘图工具，包括望远镜和其它附件
ORIGIN
1.French
法语
2.from Medieval Latinalidada [sighting rod]
源自 中世纪拉丁语alidada [观测杆]
3.from Arabical-'i&9{ódah [the revolving radius of a circle]
源自 阿拉伯语al-'i&9{ódah [圆的旋转半径]
4.from'a&9{Ãud [humerus]
源自'a&9{Ãud [肱骨]
