n.an automatic mechanical device on a record player that causes new records to be played without manual intervention
同义词：record changerchanger
英汉双解大词典
autochanger/ˈɔːtəʊˌtʃeɪndʒə/
1.
N（名词）
a device in a record player that enables a small stack of records to be dropped automatically onto the turntable one at a time and played separately 自动换唱片机