doubleveeadj.双v形的(X形的)doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double hingedadj.双铰的double folium双叶线double plasma双等离子体double factor双因子double-dike双戗堤doublejointedadj.双重关节的(前后左右可自由活动的)double-reedadj.双簧的n.双簧乐器double lashed双重滚扎double-coat双重涂层double-vane双叶片,双翼,双舵