Sper·ry 
(spĕrē), Elmer Ambrose 1860-1930.
(spĕrē), Elmer Ambrose 1860-1930. American engineer and inventor of numerous electrical devices, including the gyrocompass, a nonmagnetic navigational aid (1910).
| 单词 | Sperry |
| 释义 | Sper·ry (spĕrē), Elmer Ambrose 1860-1930. American engineer and inventor of numerous electrical devices, including the gyrocompass, a nonmagnetic navigational aid (1910). |
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