Elmer Ambrose Sperry
| Noun | 1.Elmer Ambrose Sperry - United States engineer and inventor of the gyrocompass (1860-1930) |
| 单词 | elmer ambrose sperry | ||
| 释义 | Elmer Ambrose Sperry
Elmer Ambrose Sperry
Synonyms for Elmer Ambrose Sperry
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