secondary ray次级射线secondaryadj.次要的；从属的；中等教育的n.副手；次要位置secondary salinization次生盐化secondary anal opening[医] 次级肛口secondary hypertension继发性高血压secondary modificationpostranslational modificationsecondary oxidized ore次生氧化矿secondary oval foramen次级卵原孔secondary lung abscess继发性肺脓肿secondary immunization二次免疫secondary data channel辅助数据道secondary command post辅助指挥所