演生圆 generating circle: 母圆rolling circle: (齿轮的)基圆, 展成圆, 滚动圆; 滚环; 母圆, 昼圆, 滚动圆; 转车台dna replication rolling circle: dna复制滚环double rolling circle: 双滚环double rolling circle model: 双滚环复制模型下载手机词典可随时随地查词查翻译