periodicalsn.期刊名词periodical的复数形式.
periodicaln.期刊adj.定期的
periodical requirement定期请求
periodicals evaluation期刊评价
periodical arrangement期刊排架
periodical circulation期刊流通
periodical examination定期检测
periodical page layout画刊版面
periodicals collection期刊专藏
periodical utilization期刊利用
periodical development期刊开发
periodically magnetize周期磁化