该工艺实现了炼铁污泥的循环利用，具有明显的经济效益和社会效益。
The process has good economic and social benefits due to its better circular utilization of ironmaking sludge.
从各项指标的变化情况来看，使用二灰桩具有明显的经济效益和社会效益。
The changes of performance indexes show that the two ash pile has good society and economy benefits.
负荷预测在燃气系统规划和运行调度方面发挥的重要作用，具有明显的经济效益。
Gas load forecast has great influence on the planning, operation and control of gas system and has obvious economic benefit.
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