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液体火箭发动机 yètǐ huǒjiàn fādòngjī
astronaut. liquid propulsor
space liquid propellant rocket; liquid rocket; liquid rocket engine
液体〔燃料〕火箭发动机
gen. liquid rocket engine
液体 火箭发动机: 32 phrases in 5 subjects
Aviation1
General3
Space26
Technology1
Transport1