| 摘要 |
<p>A motion generator comprising an aperture for fluid flow and a buoyant plug for the aperture, the plug urged to substantially alignment with the aperture for substantially perpendicular movement relative to the aperture in a flow through the aperture, the plug associated with an actuator element, the plug and the aperture reciprocally shaped such that, with the relative buoyancy and/or elasticity of the plug in a fluid flow, the plug oscillates in a fluid flow in use through the aperture to provide a reciprocal motion in the actuator element.</p> |
