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本文评述现代国际应用的“煤炭可选性原理及评定方法”存在的错误,并试图探讨一种新的“煤炭可选性原理及评定方法。”“煤炭可选性”也可以叫煤炭的分选难易程度。其评定的方法是根据煤炭入选前
This paper reviews the errors in the “Coal Selectivity Principles and Assessment Methods” applied to modern international applications and attempts to explore a new “Coal Selectivity Principle and Assessment Method.” “Coal Selectivity” can also be called Coal Separation Ease of choice. Its assessment method is based on the coal before the election