| 摘要 |
A piezoelectric oscillator 30 comprises an exterior wall that moves a first urging member urging the exterior wall in a first direction x, and moves a second urging member urging the exterior wall in a second direction y that is perpendicular to the first direction x. The first urging member is moved in the second direction y on the basis of vibration, and the second urging member is moved in the first direction x on the basis of the vibration.
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