alidade是什么意思？

alidade

英[ɑ:li:'deɪd] 美[ɑli'deɪd]

• n. 照准仪；

英英词典释义

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