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A kind of dynamic quadrotor manned vehicle of oil
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A kind of dynamic quadrotor of double hair oil
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A kind of big boom device of folding aircraft
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A kind of manned automobile of dynamic quadrotor of oil
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A kind of system suitable for new configuration multi-rotor aerocraft conceptual design
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A kind of ratchet device of rotary-wing transmission
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A kind of more power parallel transmissions
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A kind of dual input multi output gear-box
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A kind of telescopic aircraft support boom device
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Inflatable cushion for small aircraft and small aircraft
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Aircraft propeller surface regulating mechanism
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