gantryn.(起重的)龙门架；跨轨信号架；(火箭发射设备的)竖架gantry correction纠偏gantry gate hoist门式启闭机gantry SAW machine龙门埋孤焊Gantry Type Planer龙门刨床gantry cross truck龙门跨车gantry-type robot桥式机器人gantry construction起重台架建筑Gantry Machine Tool龙门加工中心gantry crane system门式起重机装置gantry plate shearer龙门剪板机