secondary

the novel’s secondary characters.这本小说中的次要人物

secondary school,中等学校

secondary market,二级市场；次级市场

secondary pollution,二次污染

secondary education,中等教育

secondary industry,第二产业，次级产业

technical secondary school,中专学校

secondary flow,二次流

secondary structure,二级结构；次生结构

secondary vocational school,中等职业学校

secondary air,[化]二次风；二次空气

secondary refining,二次精炼

secondary forest,[林]次生林；再生林

secondary circuit,二次电路，次级电路

secondary treatment,二级处理；次级处理

secondary voltage,二次电压

secondary battery,二次电池；蓄电池

secondary processing,二次加工

secondary stress,次应力；次重音

secondary porosity,次生孔隙度

secondary data,次级资料；二手数据；二级信息