secondary cut多次切割
secondaryadj.次要的;从属的;中等教育的n.副手;次要位置
secondary inoculation reaction继发性接种反应
secondary wastewater treatment污水二级处理
secondary pump variable volume二次泵变流量
secondary disease of dysentery痢后风
secondary motor correspondence继发性运动对应
secondary natural radionuclide次级天然放射性核种
Secondary cooling water system二次冷却水系统
secondary tuberculosis of lung继发性肺结核