| 摘要 |
<p>The invention provides an improved coil fumigant set substantially quadrilateral in shape, comprising 2 or 4 coil members, wherein, each member integrated with the other member(s), each member has a central eye-piece and a runner, and the eye-pieces of the members are disposed at 180° or 90° with respect to one another to form a matrix of two coil members or four coil members and wherein, the runner of each coil member runs substantially parallel to the runners of the other member(s) and the runners run substantially in the form of a quadrilateral, with the corners of the quadrilateral being less than 90° and the radii decrease progressively towards the central eye-piece.</p> |
