double nip双接口
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double-boiled fresh milk炖鲜牛奶
double anti-sliding pile双排桩
double- faced clad plate双面复合板
double optimization design双重优化设计
double-door refrigerator双门冰箱
double-headed perforator双头冲孔机
double sealed ball bearing两面带密封圈的球轴承
double-bevel groove weld双斜边坡口焊缝,双斜坡口焊
double pole fishing method双杆钓鱼法
double-beat poppet valve双层提升阀