secondaryadj.次要的;从属的;中等教育的n.副手;次要位置
secondary axis副光轴,副轴,次轴
secondary file二次文件,辅助文件
secondary word二度组合词
secondary copy辅副本
secondary pole次极
secondary cyst次生囊
secondary weir副堰,辅助堰
secondary flat次平面
secondary wood次生木材
secondary flow二次流