secondary ore次生矿secondaryadj.次要的；从属的；中等教育的n.副手；次要位置Secondary brain insult二次脑损伤Secondary biogenic gas次生生物气secondary dysmenorrhea继发性痛经secondary control unit辅助控制器secondary relationship衍生关系secondary pore-space次生孔隙secondary oil recovery二次采油secondary paticle beam次级粒子束secondary lateral vein次生侧脉secondary hypocitruria继发性低枸橼酸尿