减速火箭 jiǎnsùhuǒjiàn retrorocket Definitions Defs Origin Strokes Stroke Words Sentences Sents 减速火箭 減速火箭 jiǎnsùhuǒjiàn retrorocket a rocket engine that provides thrust in the opposite direction to the motion of a spacecraft, used to slow it down Cross-References Classifier 枚 méi
减速火箭 減速火箭 jiǎnsùhuǒjiàn retrorocket a rocket engine that provides thrust in the opposite direction to the motion of a spacecraft, used to slow it down Cross-References Classifier 枚 méi
