secondary bus辅助总线
secondaryadj.次要的;从属的;中等教育的n.副手;次要位置
secondary plant再加工技术设备
secondary metal再生金属
secondary curve二次曲线
secondary range次等草场
secondary light次要光
secondary spore次生孢子
Secondary apnea继发窒息
secondary amide仲酰胺
secondary stock次级股票
secondary shoot次生茎