The frequency theory of law strain dynamic pipe measurement is sketched. The frequency formula is deduced out. The relationship between exciting material, frequency and length of piles is reached.

简述了低应变动测桩的频率理论，推导出了频率公式，得出了激励材质与频率、所测桩长之间的关系。

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The LIVE 5000 is voiced to produce the best frequency response, group delay and tone quality to faithfully reproduce any program material.

ENGADGET: Altec Lansing Live 5000 WiFi music system makes its debut, plays nice with Android and iOS (ears-on)