单词	astronomical triangle
释义	astronomical triangle The spherical triangle formed by joining the observer's elevated pole, his zenith, and the position of the body on the celestial sphere.
随便看	dioptrics dioptric system dioptrimeter dioptrometer dioptry dio-r dior diorama dioramas dioramic diorchism dior christian dior, christian diordiev, evgenii diordiev, evgenii iakovlevich diorea diores diori hamani diori, hamani diorism dioristic dioristical dioristically diorite diorites

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