periodicles期刊periodicadj.周期的；定期的；间歇的；完句的periodic coordination周期协调periodic projectivity循环射影periodic oscillations周斯摆动periodicity detection周期检测periodic acceleration周期一过性频脉periodic proper value周期特征值periodic semi-group周期半群periodic water volume周期制水量periodic rejuvenation间种更新Periodic broadcasting周期广播