| 摘要 |
A dynamic vibration absorber includes an arm section that includes an elastic unit; and a weight section that is connected to the arm section and includes a mass unit. The arm section and the weight section each include a plurality of stacked single-layer materials having different degrees of elasticity and specific gravities, and at least one of the single-layer materials of the arm section and at least one of the single-layer materials of the weight section are shared in common. |
