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泳池是邮轮休闲娱乐设施的重要组成部分,泳池水的循环方式是影响水质均匀的重要因素。通过对顺流式、逆流式和混流式3种主流泳池水循环方式的优缺点进行收集分析,结合邮轮对泳池水循环方式的特殊要求进行综合评价与比选,推荐VISTA级大型邮轮采用逆流回水、顺流给水的泳池水循环方式,以提高泳池水循环效率。 相似文献
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Gearbox in offshore wind turbines is a component with the highest failure rates during operation. Analysis of gearbox repair policy that includes economic considerations is important for the effective operation of offshore wind farms. From their initial perfect working states, gearboxes degrade with time, which leads to decreased working efficiency. Thus, offshore wind turbine gearboxes can be considered to be multi-state systems with the various levels of productivity for different working states. To efficiently compute the time-dependent distribution of this multi-state system and analyze its reliability, application of the nonhomogeneous continuous-time Markov process(NHCTMP) is appropriate for this type of object. To determine the relationship between operation time and maintenance cost, many factors must be taken into account, including maintenance processes and vessel requirements. Finally, an optimal repair policy can be formulated based on this relationship. 相似文献
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