double nut双螺帽
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double precision constant双倍精度常数
double hull tanker design双壳油船设计
double-humped resonance双峰谐振,双峰共振
double shoulder springbar双轴肩表耳簧
double shell rotary drier双壳旋转干燥器
double predictive caching预测双缓存
double-principal theory双重委托理论