Leading step by step heating method to ensure the quality of drinking water and energy efficiency indicators.
领先的步进式加热方式，保证饮用水质量和高效节能指标。
The polytropic efficiency is one of the most significant indicators.
多变效率是最重要的指标之一。
This paper analyzes the efficiency of coal utilization in China's iron and steel industry, finding out the gap between China and some developed countries by comparing the main technical indicators e.
本文主要分析了我国钢铁工业的用煤效率，通过主要技术指标(吨钢综合能耗、吨钢可比能耗等)的国内外比较，找出我国与国际先进水平的差距。
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