求翻译：全硫分、发热量的测定。正确的评价煤质对煤的深加工与利用的重要意义。煤的工业分析主要用于煤的生产开采和商业部门及用煤的各类用户，如焦化厂、电厂、化工厂是什么意思？

Determination of total sulfur content, calorific value. Correct evaluation of the significance of coal quality on deep processing and utilization of coal. Coal industry analysis mainly for coal production and coal mining and the commercial sector of various users, such as coking plants, power plants, chemical plants