The propagation of P-wave in one-dimensional rock masses is analyzed according to plane to plane contact model.
采用面-面接触模型模拟了纵波在一维岩体中的传播，给出了纵波波形；
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Results The rotational alignment of the femoral components paralleled to the transepicondylar axis had the best results of the peak value of the patellofemoral contact pressure(P< 0. 05).
结果当股骨假体的旋转与经股骨上髁轴平行时，测得的髌股关节峰值接触压结果最优（P< 0．05）。
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