Astrolabe
[æstrәleib]
解释:
(n.) An instrument for observing or showing the positions of the stars. It is now disused.
(n.) A stereographic projection of the sphere on the plane of a great circle, as the equator, or a meridian; a planisphere.
哈罗德手打
解释:
n. an instrument for measuring the altitudes of the sun or stars now superseded by Hadley's quadrant and sextant.
柯蒂斯校对