| 摘要 |
<p>A sphere, which falls in a falling chamber (c) and dives into water at a second water surface formed at a lower end of the falling chamber, rises up in a rising chamber (b1-b3) with buoyancy force while pushing upward-opening check valves (16-1, 16-2) open one after another. The sphere which has risen up to a first water surface formed at an upper end aperture of the rising chamber (b1-b3) pushes another sphere at the aperture out from the first water surface. The sphere pushed out further shifts to an upper end opening of the falling chamber and falls in the falling chamber (c) toward the second water surface.</p> |
