| 摘要 |
<p>The device has a rope support system, which has a non-elastic rope of variable length, in the other chain from connecting short elastic member. Another connecting member is made from elastic rope connection, which spreads in an angle from one another by fixing the device on the body of the swimmer. A fastening device (10) is arranged on each of the two ropes over a connecting element. The fastening device has two bands each and a buoyancy body (1).</p> |
