coaxial contra-rotating reduction gear
coaxial contra-rotating propellers 同轴反转螺旋桨 coaxial contra-rotating reduction gear 同轴对转减速齿轮 coaxial data circuit 同轴数据电路 ..
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coaxial contrarotating reduction gear
... 可倒转减速齿轮箱 reverse reduction gear box 同轴对转减速齿轮 coaxial contrarotating reduction gear 恒星式减速齿轮 solar gear ...
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