稳定受迫振动与强迫力之间的相位差
JOURNAL OF QINGDAO UNIVERSITY（2000）
Abstract
通过数学分析得出振动质点的速度与强迫力之间的相位差.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.
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