| 摘要 |
<p>The support has a circular crown (3) from which a foot (4a, 4b, 4c) extends and spaced at 120 degrees with respect to each other, around the crown. A cross piece (6) is constituted by branches (6a, 6b) connected together by converging inner ends. The piece has outer ends connected with the crown. A plate (7) has contraction zones which retain a tail of a balloon inside slots (8a, 8b, 8c).</p> |
