Results 251 to 260 of about 521,562 (282)

The Ship Screw

1984
Our next subject will be the ship screw which is upto now the most important device for hydrodynamic propulsion. It consists of a number of helicoidally shaped blades connected to a hub. The number of blades can vary from two upto about six. The hub is mounted on a shaft (figure 3.1) which is rotated by the engine.
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Scaphoid screws

The Journal of Hand Surgery, 1988
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BONE-SCREW AND BONE-SCREW SCREW-DRIVER

JAMA: The Journal of the American Medical Association, 1920
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Arthrodesis screw

Journal of the American Podiatric Medical Association, 1987
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SCREW PROPELLERS

Journal of the American Society for Naval Engineers, 1912
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Screw-holding screw driver

Journal of the Franklin Institute, 1957
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20 Screw placementodontoidOdontoid screw placementOdontoid fractureodontoid screw placement forFractureodontoidodontoid screw placement forOdontoid Screw Placement

2016
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40 Screw placementcorticalCortical screw fixationCortical Screw Fixation

2016
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48 Screw placementsacralSacral screw fixationSacral Screw Fixation

2016
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“Unique” Screw-Holding Screw Driver

Scientific American, 1888
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