periodicles期刊
periodicadj.周期的;定期的;间歇的;完句的
periodic abdominalgia周期性腹痛
periodic unit amounts周期单元数
periodic disturbances周期性干扰
periodic wave solution周期波解
Periodic Brugia malayi周期型马来丝虫
periodic safety report定期汇总表
periodic unsteady flow周期性非定常流动
periodic trial balance期末试算表
periodic communication周期通信
periodic reinforcement定时强化