periodicallyadv.周期性地;定期地
periodicaln.期刊adj.定期的
periodical compressive load周期性压缩荷载
periodical line displacement周期性行位移
Periodically cusped magnetic周期凸起磁场
periodical utilization ratio期刊利用率
periodically fee calculating周期性计费
periodically operated switch周期动作开关
periodical shelf arrangement期刊排架
Periodical evaluation system期刊评价体系