A four-wheeled, open, box-shaped wagon or iron car run on tracks in a coal mine.
A four-wheeled, open, box-shaped wagon or iron car run on tracks in a coal mine.
矿车、煤车煤矿中在轨道上行驶的四轮、开口、盒状的运货车或铁制车厢
A four-wheeled, open, box-shaped wagon or iron car run on tracks in a coal mine.
矿车、煤车煤矿中在轨道上行驶的四轮、开口、盒状的运货车或铁制车厢