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冲压发动机 chòngyā fādòngjī
space ram engine; ramjet
冲压喷气发动机
space ram jet; ram jet engine
冲压发动机
: 211 phrases in 11 subjects
Air defense4
Astronautics2
Aviation49
Combustion gas turbines1
General8
Military1
Nautical1
Rail transport3
Space106
Technology35
Transport1