hopper bottom car 底开式车

water-cooled hopper bottom 冷灰斗

hopper-bottom car 底卸式车辆

hopper bottom furnace 漏斗炉

hopper bottom clips 箱斗底夹

hopper bottom freight car 底卸式货车

cooled hopper bottom 冷灰斗

hopper bottom bin 漏斗底箱

hopper bottom plate 箱斗底板