《dioptra.doc》查看内容详情
亲，网页上所展示的文章内容和下载文档内容是一致的，下载前请点击“查看内容详情”确认是否您所要下载的内容。
n.测量高度及角度用的一种光学装置； 英英释义： DioptraA dioptra () is a classical astronomical and surveying instrument, dating from the 3rd century BCE. The dioptra was a sighting tube or, alternatively, a rod with a sight at both ends, attached to a stand.以上来源于:Wikipedia
