twinter缠绕twinadj.孪生的；紧密联系的n.双胞胎之一twin channel laser双通道激光器twin-engined bus双发动机公共汽车twin-arch tunnel联拱隧道twin-bore tunnel两连拱隧道twin-box section分离双箱twin wheel loading双轮负荷twin-feed spiral双头螺旋twin vertical tail双立尾twin ion technique双离子技术, 孪离子技术twin-runner type双转轮式