Destruction of old material and formation of new material are thus in permanent dynamic equilibrium.
因此，旧材料的破坏和新材料的形成处于永久的动态平衡状态。
The dynamic mechanical property of polyurethane damping material has been studied.
研究了聚氨酯阻尼材料的动态力学性能。
Used for testing dynamic tension of various flexible material.
用于测量各种柔性线材动态张力。
Used for testing dynamic tension of various flexible material.
用于测量各种柔性线材动态张力。
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