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1 ?振动秒数 hyperacoustic 释义：超声波的 vibration seconds 释义：振动秒数,振秒(声波测量单位) Diagnostic ultrasound peripheral vascular system 释义：周围血管系统诊断性超声波[检查法] ..
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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。 - 2
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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