twinter缠绕twinadj.孪生的；紧密联系的n.双胞胎之一twin exhaust pipes双排气管twinkling of stars星星的闪光twin-disk colter双圆盘开沟器twin scavenge pump双扫气泵twinned agent unit泡沫干粉联用装置twin boom aircraft双机身飞机twin-lamp socket双灯座twin-tube heater双管加热器twin-belt vanner双带式淘洗机twin-shaft mixer双卧轴搅拌机