twining缠绕的twinadj.孪生的；紧密联系的n.双胞胎之一twin crystal structure双晶结构twin-screw stretcher双螺杆twin-engined fighter双发动机战斗机twin-engine airplane双电动机飞机twin carburetor system双化油器系统Twin transducer probes双晶串列探头twin row radial engine双排星型发动机twin-finned airplane双垂尾飞机twin-carbon arc lamp双碳极弧光灯twin crankshaft engine双曲轴发动机