| 摘要 |
The device (10) comprises an outer body (12) and an inner body (14), both of axially symmetric shape relative to an axis (x). The inner body (14) is received inside a first cavity (20) of the outer body (12) so as to be firmly connected to the latter. The outer body (12) and the inner body (14) are made, respectively, of stainless steel and copper, and preferably have a weight ratio equal to 3 or the number phi (the golden section). The characteristic dimensions of the device (10) are such that their ratios axe either integers, or fractions thereof, or numbers corresponding to powers of Phi and/or of pi. |
