SEM analysis identifies spherical particles as well as irregular particles in both dust and topsoil, which indicates input of magnetic particles derived coal combustion.
扫描电镜分析表明,除了不规则的磁性颗粒外,尘土与表土中均发现了球状颗粒,说明二者均含有来自工业燃煤释放的磁性颗粒。
The results show that the concentration of coal dust is inversely proportional to the diameter of particles.
研究表明颗粒的起尘浓度与颗粒直径成反比。
The results show that the concentration of coal dust is inversely proportional to the diameter of particles.
研究表明颗粒的起尘浓度与颗粒直径成反比。
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