rock·et·ry 
(rŏkĭ-trē)
(rŏkĭ-trē)n.
The science and technology of rocket design, construction, and flight.
| 单词 | rocketry |
| 释义 | rock·et·ry (rŏkĭ-trē)n. The science and technology of rocket design, construction, and flight. |
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