| 释义 |
ar·mil·lary sphere
\ˈärməˌlerē, ärˈmilərē\ noun
Etymology: Middle French armillaire, from Medieval Latin armilla + Middle French -aire -ary
: an ancient astronomical instrument composed of an assemblage of rings, designed to represent the positions of important circles of the celestial sphere, and turning on its polar axis within a meridian and horizon |