On the basis of considering environmental protection, resources comprehensive utilization and industrial policies, the method of using tailing sand to produce air-entraining concrete was put forward.

本文在全面考虑环境保护、资源综合利用和产业政策的基础上，提出了以尾矿砂为原料生产加气混凝土的综合利用方法。

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A comprehensive assessment method for relay protection condition is proposed on the basis of three elements: state diagnosis, risk assessment, apparatus patrol and operation management information.

提出了基于状态诊断信息、风险评估、设备巡视与运行管理信息三方面要素的继电保护状态综合评估方法。

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This paper presents a comprehensive method based on different conditions after disturbance to avoid the problems caused by the traditional prediction for out- of- step protection.

针对传统大型发电机失步预测保护所存在的问题，并根据不同预测原理在实际应用中的优缺点，提出了一种综合保护方案。

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