Under the costs of prevention, appraisal cost, internal loss, external loss 4 two subjects.

下设预防费用、鉴定费用、内部损失、外部损失4个二级科目。

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Quality cost is the cost which is needed to keep product quality at the given level, it includes prevention cost, appraisal cost, internal losing cost and external losing cost.

质量成本是指将产品质量保持在规定的水平上所需的费用，它包括预防成本、鉴定成本、内部损失成本和外部损失成本。

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Practical methods of on-site diagnosis and internal leakage prevention are presented through an analysis in the mechanism of internal leakage in hydraulic system.

本文通过对液压系统故障机理的分析，比较全面地提出了现场诊断和预防内漏故障的实用方法。

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That study suggested that the cancer prevention benefits outweighed the risks of internal bleeding.

BBC: Aspirin - risks and benefits

To strengthen internal commitment to end suicides amongst our military, the Department of Defense formed the Defense Suicide Prevention Office to lift up suicide awareness and develop prevention strategies.

WHITEHOUSE: Joining Forces Blog

Although fraud prevention mechanisms, such as the Ethics Helpline and Office of the Ombudsman, led Corporate Security and Internal Audit groups to investigate reports about certain arrestees, they did not appear to run joint investigations or develop a corrective actions approach.

FORBES: Is Wall Street Wrong About Con Edison? Probably.