cellase英美纤维二糖酶机械双语例句Secondly, through the agar radial diffusion, the sensitivity and specificity of β-glucanase and cellase activity assay were improved greatly.采用琼脂放射扩散法测定纤维素酶或β-葡聚糖酶酶活,提高了测定的特异性和灵敏度;