Based on clear physical concepts, complete nonlinear dynamic equations of two-phase media are derived by using classic mechanical principle directly.
本文以清楚的物理概念，依据经典力学原理建立了两相介质完整的动力学非线性方程组。
With no external mechanical knobs or switches, the DP1 retains the classic beauty of an acoustic grand piano, adjusting every aspect of the digital piano through its intuitive control panel.
与任何外部机械旋钮或开关，dp1保留了经典的美声大钢琴，调整的各个方面，数字钢琴通过其直观的控制面板。
With no external mechanical knobs or switches, the DP1 retains the classic beauty of an acoustic grand piano, adjusting every aspect of the digital piano through its intuitive control panel.
与任何外部机械旋钮或开关，dp1保留了经典的美声大钢琴，调整的各个方面，数字钢琴通过其直观的控制面板。
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