cordlessadj.无线的Cordless Medical Vaccum无线医用真空cordless access service无绳接入服务cordless access services无绳接入业务cordless pointing device无绳定位装置cordless toll switchboard无绳式长途交换台cordless telephone system无绳电话系统cordless system trunk board无塞绳式中继台cordless image transmission无线图像传输cordless terminal equipment无绳终端设备cordless switchboard section无绳交换台座席区