Reduced cost: Cloud computing can reduce both capital expense (CapEx) and operating expense (OpEx) costs because resources are only acquired when needed and are only paid for when used.

降低成本：云计算可以降低资本费用(CapEx)和运营费用(OpEx)，因为可以只在需要时购买资源，而且只按使用时间付费。

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This paper analyzes operating cost of five paper making factories, then builds wastewater COD cutting expense function in paper making factories. Finally relative conclusions and advice are proposed.

分析了五家造纸厂的污水处理设施的运行成本，对造纸行业构建了污水COD削减费用函数，提出了相关结论与建议。

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Savings should be split approximately 65 percent to operating expense, and 35 percent to cost of goods sold.

ENGADGET: Lexmark announces detailed restructuring plan: 1,700 layoffs, inkjet business to be nixed