词汇	振铃信号制
释义	振铃信号制 ring-down system
随便看	automatic clearing house automatic clearing indicator automatic clearing key automatic clearing signal automatic clinical analyzer automatic clinical chemistry analyzer automatic clinical classification system automatic clinical microtome automatic clip automatic clipper automatic clocking circuit automatic clock switch automatic closed-loop control automatic closed-loop control system automatic closed-loop process control system automatic closed-loop system automatic closedown automatic closer automatic close up automatic closing automatic closing appliance automatic closing device automatic closing door automatic closing emergency sources automatic closing fire damper