External periodical current constraint 外控周期电流约束
periodical reversal current 周期换向电流
current periodical room 现期期刊室
Current periodical lending 现刊外借
Chinese current periodical 中文现刊
current periodical acceptance 现刊签收
The Current automatic administration system in college and university libraries is designed according to the traditional manual operation process, let alone the periodical subsystem.
高校图书馆现有的自动化管理系统是模拟传统手工操作流程设计的，期刊子系统更是如此。
A new method of current decomposition is proposed for single-phase circuit with periodical voltage and current.
对于任意周期性电压与电流信号的单相电路，提出一种新的电流分解方法。
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