Definition of contra-rotating in English:

contra-rotating

adjectivekɒntrərəʊˈteɪtɪŋ

词汇	contra-rotating
释义	Definition of contra-rotating in English: contra-rotating adjectivekɒntrərəʊˈteɪtɪŋ Rotating in the opposite direction or in opposite directions, especially about the same shaft. （尤指共轴）反向旋转的，向对转的 Example sentencesExamples The valves are actuated via drag arms from twin, contra-rotating camshafts. The twin rotor mechanism seems very accurate for scale and is contra-rotating, an unexpected bonus on a model. With its wings folded and contra-rotating propellers missing, the former fighter was neatly parked between two of the unit's wooden huts. However, most designs still had two or more contra-rotating blades to solve the torque problem and this caused highly complex and unsound craft. Another benefit was that the contra-rotating propellers eliminated torque.
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