对称位置
相对于谐振器螺柱轴线对称的位置。
示例：
- 条形变幅杆：与螺柱轴线等距的任意两个位置（如端面的两端、对称分布的槽上方等）。
- 块形变幅杆：与螺柱轴线等距的任意四个位置（如端面的四角、对称分布的槽交叉处上方、棱边中点位置等）。
- 径向开槽的圆柱形变幅杆：变幅杆端面周边位于槽上方的位置、变幅杆端面周边位于相邻槽中间的位置等。
对于大多数应用，指定的对称位置处的振幅理想情况下应当相同。
另见非对称谐振。
Symmetric locations
A location that is symmetric with respect to the resonator's stud axis.
Examples:
- Bar horns: at any two locations that are equally spaced from the stud axis (e.g., the ends of the face, over symmetrically spaced slots, etc.).
- Block horns: at any four locations that are equally spaced from the stud axis (e.g., the corners of the face, over symmetrically spaced slot intersections, at mid-edge locations, etc.).
- Radially slotted cylindrical horns: at locations on the periphery of the horn face above the slots, at locations on the periphery of the horn face midway between the slots, etc.
For most applications, the amplitudes at specified symmetric locations should ideally be identical.
Also see asymmetric resonance.