gate cutter英 [ɡeɪt ˈkʌtə(r)]美 [ɡeɪt ˈkʌtər]网络 浇口切断器; 浇口切断机机械双语例句Support Technique of Large-section Gate Roadway in Coal Cutter Face刨煤机工作面大断面顺槽锚杆锚索支护技术