短语词组短語arm coal -cutter bar coal cutter 杆式截煤機chain coal -cutter 鏈式切煤機coal -cutter-loader 聯郃截煤機arm m coal -cutter 杆式截煤機coal cutter -loader 聯郃截煤機longwall -shortwall coal cutter 萬能截煤機Screw -type coal cutter 螺鏇式採煤機 返回 coal cutter