| 摘要 |
<p>A connecting board carrying an electric circuit and extending the full length of the cup-shaped body is positioned substantially closing the mouth, inside an inner casing cavity, and carries, on a first face all the electronic pulse generating means connected mechanically and electrically to one another and to the board by the board itself and the circuit, so as to be housed in one continuous compartment defined by the cavity and by the connecting board, so as to be embedded, together with the connecting board, in a matrix of insulating polymer resin which fills the whole of the cavity up to a point substantially flush with the mouth of the cavity.</p> |
