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六十年代中期,西德研制的螺旋煤仓首次在美国吉姆·沃尔特资源公司四号矿井使用。该螺旋溜槽既可布置在圆筒形煤仓的内壁(见图1)也可布置在煤仓中间(见图2)。试验表明:煤沿溜槽滑到仓
The mid-1960s, West Germany developed spiral coal warehouse for the first time in the United States Jim Walter Resources Company No. 4 mine use. The spiral chute can be placed either inside the cylindrical coal bunker (see Figure 1) or in the middle of the bunker (see Figure 2). Experiments show that: coal slide along the chute to the warehouse