And researches found that P waves traveled through both liquids and solids while s waves traveled only through solid matter.
研究发现P波能在液体和固体中传播，然而S波只能在固体介质中传播。
And researchers found that P waves travel through both liquids and solids while s waves travel only through solid matter.
研究者发现P波可以同时穿过液体和固体，但是S波只能穿透固体。
Previous studies show that both dynamite borehole shots and vertical vibrations from controllable seismic sources at the surface will produce relatively strong pure P-waves and weaker pure S-waves.
已有的研究表明，炸药震源在井下激发、可控震源在地面垂向振动，均会产生较强的纯纵波和一定强度的纯横波；泊松比差别较大的分界面有利于形成较强的透射转换横波。
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