短语词组短語definite -time limit relay 逆時定時限繼電器;定時限繼電器;繙譯inverse -time definite time limit relay 反時定時限繼電器;定時限繼電器definite time -limit release 定時限釋放definite minimum time -limit relay 最小定時限繼電器;時限繼電器 返回 definite-time limit