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the world > the universe > cosmology > science of observation > astronomical instruments > measuring altitude > [noun] > mural arch (2)
mural arc1786

Astronomy. Designating or relating to a wall or walled arch set in the plane of the meridian for the alignment of a large quadrant, telescope…

mural circle1833

Astronomy. Designating or relating to a wall or walled arch set in the plane of the meridian for the alignment of a large quadrant, telescope…

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更新时间:2024/9/20 15:44:06