secondary production
短语词组
- secondary timber production forest 低产用材林
- secondary y production 第二级生产;次级生产
- secondary energy production 二次能源生产
- secondary oil production 机械采油
- secondary metabolize production 次生代谢物
- secondary metabolite production 次级代谢产物
- Secondary Production Processes 精加工工艺
- Primary And Secondary Production 初级与二级产品
- secondary production of rangeland 草地次级生产 返回 secondary production