求翻译：成本控制是成本控制就是指以成本作为控制的手段，通过制定成本总水平指标值、可比产品成本降低率以及成本中心控制成本的责任等，达到对经济活动实施有效控制目的的一系列管理活动与过程。开展成本控制活动的目的就是防止资源的浪费，使成本降到尽可能低的水平，并保持已降低的成本水平。是什么意思？

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Cost control, cost control is based on cost control means, through the formulation of overall cost value of the indicators, comparable cost of the product cost centers as well as lower rates of cost control, such as responsibility, to reach the level to implement effective control%