Rock Quality, Seismic Velocity, Attenuation and Anisotropy.

岩石质量，速度，衰减及各向异性。

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The rock quality evaluation can be taken as a pattern recognition or classification problem.

岩体质量评价问题可以认为是一个模式识别或分类问题。

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Rock P-wave velocity as a key mark of rock quality can reflect the state of rock body quality in the dam site area.

岩体波速作为反应岩体质量的重要指标，可以反应坝址区岩体质量状况。

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Naked' is coinciding with an increase in demand for guitar-based rock and quality pop, it is hoped that this new appeal to the young will be enduring.

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"When I started, geologists were considered heretics for dreaming that there could be salt canopies with reservoir-quality rock beneath them, " says Issen, 54.

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Now, anyone can have the chance to sit back or rock out while enjoying concert quality sound at home with thumping lows, sizzling highs and crystal-clear sound at any level.

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