| 摘要 |
<p>Swim fin (1) provided with a canal-like member (202-2-202) for conveying and controlling the fluid flow produced during each swimming stroke. The fin (1) comprises at least at the central portion of its blade (201) a section (2) which, by dynamical deformation, gives rise to a canal-like fluid flow conveying member (202-2-202) on that side of the fin opposed to the side under active stroke. The said canal-like member (202-2-202) is inverted as soon as the swimming stroke is reversed, so as to perform its fluid flow conveying action during both swimming strokes.</p> |
