periderm m周皮
periderm present周皮出现
wound periderm[植] 创伤周皮
secondary periderm[植] 次生周皮
cork periderm木栓周皮
trauma periderm创伤周皮
periderm structure周皮结构
N（名词） the outer corky protective layer of woody stems and roots, consisting of cork cambium, phelloderm and cork 周皮