An instrument for determining longitude from the position of the stars, esp. one which is analogous to the astronomical micrometer but designed…
单词 | θ117500 |
释义 | the world > relative properties > measurement > measuring instrument > [noun] > for measuring large objects (1) megameter1768 An instrument for determining longitude from the position of the stars, esp. one which is analogous to the astronomical micrometer but designed… |
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