常見例句雙語例句Experimental results showed that the structure, porosity and particle size of ludwigite ores have a significant effect on the reduction rate.實(shí)驗(yàn)結(jié)果表明，礦石結(jié)構(gòu)、孔隙度和顆粒的大小對還原率有明顯的影響。 返回 reduction rate of porosity