boiling sterilizer

基本解释

Before first use, wash all the parts in hot, soapy water. Then sterilize by putting cup in a pan of rapidly boiling water for five minutes or using a microwave sterilizer.
第一使用前，请将水杯和所有的配件拆开用清洁剂在温水中清洗干净；
Changes the mechanical timer of Type 420B boiling sterilizer into an electronic timer and adds a display circuit so as to make its timing ocular, operation stable and maintenance easy.
将420B型煮沸消毒器的机械定时器改为电子定时器，并加装显示电路，使其定时直观、工作稳定、便于维修。