secondary era中生代
secondaryadj.次要的;从属的;中等教育的n.副手;次要位置
secondary water-cooling二冷水
secondary fuel oil filter燃油精滤器
secondary macular atrophy继发性斑状萎缩
secondary network support辅助网络支援
secondary seedling family次生代实生有性系
secondary cooling control二冷控制
Secondary Strike Capacity二次打击能力
secondary weather station辅助气象台
secondary podzolized soil次生灰化土
secondary auditory cortex次级听皮层