“megameter”的英文意思

单词

megameter

释义

megameter|mɛˈgæmɪtə(r)|
[a. F. mégamètre: see mega- and -meter.]
a. An instrument for measuring large objects.
b. An instrument for taking astronomical measurements.
1767Ann. Reg. (1772) 96 To make trial of some instruments designed to facilitate the determination of the longitude by sea, and particularly..the megametre or grand measurer of the Sieur de Charnieres.1777Phil. Trans. LXVII. 789 An Account of a new Micrometer and Megameter [was] read June 19.1875Knight Dict. Mech. 1419/1 Megameter, an instrument for determining the longitude by observation of the stars.

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