assembly systemcombinatorial systemgroup systemgroushotgroutheorysystem, assembly组合: make up; compose; constitute系统: system再组合系统: reconfiguration system标准组合系统: standard battery system单元组合系统: modular system下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:组合系统,即可在微信中查询翻译