世界上很多国家都在研究将燃油或天然气的锅炉改燃煤或煤和其燃料的混合物,这不仅是因为油的价格比煤高,而是煤的综合利用和煤在地球上的蕴藏量远比油多,使人们越来越认识到燃油改燃煤的重要性和迫切性。美国在 Many countries in the world are studying whether to convert a fuel or natural gas boiler into a coal or a mixture of coal and its fuel not only because the price of oil is higher than that of coal but rather because of the comprehensive utilization of coal and the reserves of coal on the earth far More than the oil, so that people are increasingly aware of the importance and urgency of fuel to coal. America is here