Wave amplitude decay in different ways by downward compressive wave and upward wave, the upward wave decay slower than the downward wave.

下行压缩波与上行波衰减规律不同，其中上行拉力波比下行波衰减快；上行压缩波比下行波衰减慢。

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The blasting vibration of creep mass slope of Longtan hydropower station is observed, interpreted and analyzed. The experiential formula of decay for the blasting earthquake wave is obtained.

对龙滩水电站蠕变体边坡的爆破振动进行观测、分析和处理，得到了爆破地震波衰减经验公式。

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The exponent decay of solution of wave equation with boundary memory is obtained by the energy method.

本文利用能量扰动法得到具边界记忆项波动方程初边值问题解的指数衰减性。

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Spalted wood is wood that has been infiltrated by "waves" of decay, with each wave leaving a uniquely outlined stain-zone line.

NPR: Excerpt: 'A Splintered History Of Wood'