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to phrases
booster engine
avia.
助推器发动机
space
火箭助推器发动机
;
助推发动机
;
加速发动机
tech.
加速机组
booster engine
:
13 phrases
in 6 subjects
Aviation
4
Missiles
1
Nautical
2
Shipbuilding
1
Space
4
United States
1
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