double ax双刃斧doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double exchange双交换double membrane双层膜； 双膜double bridging剪刀撑double response双调谐double - line双线图double solvents复溶剂double attacker两手都能扣球的队员double-strand双链(DNA)(分)double invasion两度侵入double coupling双联轴节