正是有这一相位差，才使强迫力对振动系统所做的功正好抵消阻尼力对振动系统所做的负功，以保证稳定振动的等幅性。

This leads to the result that the work of force counteracts the work of damp force, and that the swing of steadily oscillation is the same.

youdao

正是有这一相位差，才使强迫力对振动系统所做的功正好抵消阻尼力对振动系统所做的负功，以保证稳定振动的等幅性。

This leads to the result that the work of force counteracts the work of damp force, and that the swing of steadily oscillation is the same.

youdao