基本解释[水利工程]孔隙率降低率英汉例句双语例句Experimental results showed that the structure, porosity and particle size of ludwigite ores have a significant effect on the reduction rate.实验结果表明，矿石结构、孔隙度和颗粒的大小对还原率有明显的影响。reduction rate of porosity更多例句专业释义水利工程孔隙率降低率