undamped pendulum
... 无阻尼振动 undamped oscillation 无阻尼摆 undamped pendulum 夜明涂料;使明亮 undark ...
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无阻尼摆动 undamped oscillation
无阻尼单摆运动方程 undamped single pendulum equation of motion
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六年来,我们用无阻尼水平摆地倾仪,在1.7秒—5秒的周期范围内,在一系列的强震发生前,分别记录到了一种明显的波动异常。
Since 1976, by using the non—damping horizontal pendulum tiltmeter at the range of 1.7"—5" period. we have recorded one wave anomaly signal before a series of strong earthquakes respectively.
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