副ふく振しん動どう

noun

secondary oscillation; secondary undulation

Technical term in physics and engineering for a secondary or parasitic vibration that accompanies a primary oscillation.

• この装そう置ちでは、主しゅ振しん動どうに加くわえて副ふく振しん動どうが観かん測そくされた。

  In this device, secondary oscillations were observed in addition to the primary vibration.

• 副ふく振しん動どうの振しん幅ぷくを抑おさえるためにダンパーが取とり付つけられた。

  A damper was installed to suppress the amplitude of the secondary undulation.