coal cleaned

基本解释

He also said as coal burning is cleaned up to remove harmful sulphur pollution climate change would actually get worse.
他还说，移除有害的硫污染以清洁燃煤，其实会使气候变化恶化。
The cleaned coal yield before and after ultrasonic treatment, the effect of flotation desulfurization and flotation speed were studied.
笔者对煤泥超声处理前后浮选的精煤产率、浮选脱硫效果、浮选速度等方面进行了试验研究。
The application of 5E-MAC type automatic analyzer in analyzing ash and volatile compound of cleaned coal, the verification for its reproducibility and accuracy were introduced.
介绍了5E-MAC全自动分析仪在焦化厂分析洗精煤灰分、挥发分上的应用，以及其重现性、准确度验证。

Coal handling certainly needs to be cleaned and cannot be allowed to pollute the air with particulates AT ALL. This will require technology, which we can perfect and then sell to other countries.
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The 69-year-old Ross amassed his fortune as a shrewd financier who bought up distressed companies in tired industries like coal, steel and textiles, cleaned up their balance sheets, improved management, then sold them for profits.
FORBES: Magazine Article