alidad是什么意思

作者:恒星英语学习网所属分类:A开头的英语单词

alidad 是什么意思

	n. 旋标装置；测高仪；照准仪。

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

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