[网络] 直流电压 c-d: 级强化班; 级通关班d and c: curettage]扩张宫颈和刮宫术; 扩张宫颈和刮宫术,刮宫术d of c: 连接图a-c d-c receiver: 交直流接收器a-c[d-c] erasure: 用交[直]流电消除(记录)下载手机词典可随时随地查词查翻译