alidade中文什么意思

n.
旋标装置；测高仪；照准仪。

• alidade clamp:    上盘制动螺旋
• alidade protractor:    照准仪分度器; 照准仪量角器
• alidade rule:    照准规

例句与用法

1. The test of dj6 theodolite eccentricity of alidade
   6型经纬仪照准部偏心差的检验
2. Eccentricity of alidade
   照准仪偏心率
3. Tube - in - sleeve alidade
   转镜照准仪
4. Fixed tube alidade
   定镜照准仪

英文释义

名词

1. surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles
   同义词：alidad
2. surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments
   同义词：alidad

百科释义

An alidade (archaic forms include alhidade, alhidad, alidad) or a turning board is a device that allows one to sight a distant object and use the line of sight to perform a task. This task can be, for example, to draw a line on a plane table in the direction of the object or to measure the angle to the object from some reference point.