As a major economical and technical indicator of coal-fired boiler, carbon content in fly-ash is of important significance for the power plants to carry out a reasonable energy-saving plan.
飞灰含碳量作为燃煤锅炉的一项主要运行经济指标和技术指标，对电厂节能工作的合理开展具有重要意义。
2
The indicator system of energy planning is the basis to carry out the work of energy planning from the view of theory and practice, which is also the details and an important part of energy planning.
能源规划指标体系为能源规划工作的开展提供了理论和实践的依据，也是能源规划工作的细化和重要组成部分。
3
Collection evaluation is the center of the library to carry out all work, but is also an important indicator to measure the lover of document acquisition.