degradation product短语¹⁴⁴⁹⁷²⁺² 基本例句 降解产物 The inducing of Dothiorella gregaria cell wall degradation product- oligosaccharides to the resistant index of poplar cell were studied with the poplar callus. 以杨树愈伤组织为试验材料，研究了杨树溃疡病菌细胞壁裂解物——低聚糖对杨树细胞有关抗病指标的诱导作用。 dictall