But in production this value can not be exceeded too much, otherwise the technical and economic indexes will deteriorate.
但生产上不宜超过这一最佳值太多，否则会使技术经济指标恶化。
Many years of practice showed that various technical and economic indexes had been remarkably perfected after improving the mining method.
经多年生产实践表明，改进后的采矿方法，其各项技术经济指标均得到显著效果。
Activated coke desulphurizer and the principle, features and technical and economic indexes of activated coke desulphurization technology are described.
介绍活性焦脱硫剂和可资源化活性焦烟气脱硫技术的原理、特点及技术经济指标。
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