The paper develops a general mathematical model of time delay relays and gives the subprogram flow charts to realize definite and variable time delay relays with a computer.
本文在建立时间继电器一般数学模型的基础上，提出了实现定时限，变时限两类数字式时间继电器的子程序流程图；
The paper develops a general mathematical model of time delay relays and gives the subprogram flow charts to realize definite and variable time delay relays with a computer.
本文在建立时间继电器一般数学模型的基础上，提出了实现定时限，变时限两类数字式时间继电器的子程序流程图；
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