time delay relay time lag relay
延时继电器;
sometimes at times at whiles for time to time from time to time on occasion
有时;
sometimes at times at whiles for time to time from time to time on occasion
有时;
sometimes at times at whiles for time to time from time to time on occasion
有时;
time lag
时滞;
时间延迟;
时滞,延时;
时间落差;