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释义
the world > the universe > cosmology > science of observation > astronomical instruments > measuring altitude > [noun] > artificial horizon (2)
artificial horizon1762

A reflecting surface (originally that of a fluid at rest) used in taking elevations, and now usually forming part of a sextant.

false horizon1812

a level reflecting surface, usually of mercury, used in taking altitudes; also called artificial horizon.

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更新时间:2025/2/24 9:12:50