tandems串翼自行车
tandemn.串联;串联式自行车
tandem sequence串联多弧焊
tandem selector汇接选择器
tandem trunking汇接中继
tandem calender成对砑光机
tandem operator转接台话务员
tandem mounting片式安装
tandem delivery联运
tandem exchange汇接局
tandem repeater转接增音机
tandem type pump串连式水泵