双语例句
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The P wave, or compressional wave, alternately compresses and expands material in the same direction it is traveling.
波，或称压缩波，在其传播过程中在同一方向交替压缩和拉伸介质（见上图）。
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For clean sandstone, the acoustic dispersion of compressional wave exists obviously when its porosity is more than 28%.
对纯砂岩，当孔隙度大于28%时存在明显纵波声频散。
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Three component data acquisition with compressional wave source was applied to YC area for predicting fracture reservoir characters.
为了探测yc地区裂隙型储层特征，在该区进行了纵波源三分量数据采集。
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