High -speed launch
The utility model relates to a high -speed launch, including the hull, rotary mechanism is installed to the afterbody of hull, rotary mechanism is last to be equipped with 3 installation arms, all installs a screw on every installation arm, and these 3 screws are high -speed screw, slow spin oar and...
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Main Author | |
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Format | Patent |
Language | Chinese English |
Published |
30.11.2018
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Subjects | |
Online Access | Get full text |
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