secondary bud副芽
secondaryadj.次要的;从属的;中等教育的n.副手;次要位置
secondary phases第二相
secondary credit[经] 从属信用状
secondary reflex二级反射
secondary player二流的选手
secondary patent二次专利
secondary batter蓄电池组
secondary planetn.卫星
secondary design二次设计
secondary cocyte次级卵母细胞
secondary office二级交换局