| 摘要 |
<p>The gong has a determined geometry shape made with amorphous structure material whose ratio-square root of an elasticity module divided by a density of a chosen material is lower than 3300 meter per seconds, where the gong is made of precious metallic wire. The material is precious metals or alloy of precious metals chosen from yellow gold, grey gold, red gold, platinum, palladium or silver, and the material is metallic glass made of zirconium, gold or platinum.</p> |
