This paper is to demonstrate two parameters of earth-leakage protection relevant to safety-value of operating resistance and operating time.

本文的目的在于论述与安全有关的漏电保护的两个参数——动作电阻值和动作时间。

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The baseline information of the patients, such as gender, age, weight and operating time etc. , was similar between the two groups (P > 0.05).

两组患者性别、年龄、体质量、手术时间等基线资料基本相似（P>0.05）。

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This paper briefly describes the cost-effectiveness analysis in respect to its conception, evaluating index, method, procedure and operating time etc.

本文对成本-效用分析的概念、评价指标、方法、步骤和运用的时机等进行了概括性的阐述；

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Fuel cells also operate 97% of the time as opposed to intermittent solar and wind power operating at 14% and 25% of the time respectively.

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This is why practice leaders and chief operating officers services firms invest so much time and effort in driving the definition of archetypical projects with phased structures, milestones, and deliverables.

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