ijung banjeon peuropelreo
counter-rotating propeller
hélice à contre-rotation ; hélice à rotation inversée
이중 반전 프로펠러는 비행기의 효율성을 높이는 데 도움을 줍니다.
ijung banjeon peuropellreo-neun bihaenggi-ui hyoyulseong-eul nopineun de doum-eul jumida.
The counter-rotating propeller helps improve the efficiency of the aircraft.
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