求翻译：矿用大型设备的有效管理有助于保障矿业安全和保证采矿技术的先进性，同时它对企业的经济效益起着举足轻重的作用，有效地进行设备更新能够加快企业现代化的步伐。矿用大型设备的更新对企业的安全生产和生产效益有直接的影响，建立矿用大型设备更新的数学模型并用动态规划方法求解既有重要的理论意义也有广泛的现实意义。是什么意思？

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