Using accelerations measured in the lower inspection gallery from the main shock as well as aftershocks, the natural periods of vibration were 0.84, 0.96, 0.92, and 0.87 seconds.
在低位测量站的加速器测量了主震以及余震，正常振幅为0.84、0.96、0.92和0.87。
And when you give your attention to it, if you maintain your focus for as little as 17 seconds, you begin to include its vibration, whatever it is, in your vibration.
当你关注它，如果你保持你的焦点至少17秒，不管它是什么，你就开始把它包括在你的振动中了。
And when you give your attention to it, if you maintain your focus for as little as 17 seconds, you begin to include its vibration, whatever it is, in your vibration.
当你关注它，如果你保持你的焦点至少17秒，不管它是什么，你就开始把它包括在你的振动中了。
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