- the science and technology of the design, operation, maintenance, and launching of rockets
| 单词 | rocketry |
| 释义 | WordReference Random House Learner's Dictionary of American English © 2024 rock•et•ry /ˈrɑkɪtri/USA pronunciation n. [uncountable] WordReference Random House Unabridged Dictionary of American English © 2024
rock•et•ry (rok′i trē),USA pronunciation n.
Collins Concise English Dictionary © HarperCollins Publishers:: rocketry /ˈrɒkɪtrɪ/ n
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