periodicallyadv.周期性地;定期地
periodicaln.期刊adj.定期的
periodicals' utilization ratio白清泉
Periodical boundary conditions周期性边界条件
periodically distorted lattice周期畸变点阵
periodical stock taking method[经] 定期盘点法
periodical information service定题信息服务
periodicals ' collectivization蒂扭转
periodicals of social sciences社科学术期刊
periodically oscillating neuron周期性振荡神经元
Periodically descriptor systems广义周期时变系统