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BNC: 0 COCA: 34542

rocketry

noun
/ˈrɒkɪtri/
/ˈrɑːkɪtri/
[uncountable]
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  1. the area of science which deals with rockets and with sending rockets into space; the use of rockets火箭学;火箭技术
BNC: 0 COCA: 34542
BNC: 0 COCA: 34542
BNC: 0 COCA: 34542

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