The company said its net profit margin fell to 14.9% in the first half from 16.8% in the year-earlier period as sales costs and management expenses rose.

公司称，因为成本和管理费用的上升，导致上半年的净利润率从去年同期的16.8%，下降到今年的14.9%。

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This paper dealt with the application of service life period expenses in equipment management and proposed some means for inproving the management.

本文对寿命周期费用在设备管理中的应用进行了分析研究，提出了相应的方法和措施。

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The management period result is been defied to match each other all expenses and all income of the enterprise.

企业的全部费用与全部收入相配比确定的经营成果是期间成果。

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