secondness第二性
secondadj.第二的;次等的;再一个的num.第二n.片刻;秒adv.第二;其次v.支持;赞成;附和;调派
second-order phase-locked loop二阶锁相环
second order differential equation二阶微分方程
second generation knowledge system第二代知识系统
Second member of Xujiahe Formation须家河组二段
Second Annex on Financial Services关于金融服务的第二附件
Second Mexican War of Independence第二次墨西哥独立战争(1861-1867)
second language learning of adults成人二语习得
second inclined tube sedimentation二级斜管沉淀法