periodicles期刊
periodicadj.周期的;定期的;间歇的;完句的
periodic epidemicity周期性流行
periodic restriction周期制约
periodic convergence周期收敛
periodic undulations周期性起伏
periodic performance周期性行为
periodic disturbance周期干扰
periodic gain region周期性增益区
periodic lubrication周期润滑
Periodic time window周期时间窗
periodic coagulation间歇凝固