- 2nd century bc, Greek astronomer. He discovered the precession of the equinoxes, calculated the length of the solar year, and developed trigonometry
- died 514 bc, tyrant of Athens (527–514)
| 单词 | hipparchus |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 Hip•par•chus (hi pär′kəs),USA pronunciation n.
Collins Concise English Dictionary © HarperCollins Publishers:: Hipparchus /hɪˈpɑːkəs/ n
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