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METHOD OF VENTILATING OPEN MINES BY CONVECTION STREAMS
METHOD OF VENTILATING OPEN MINES BY CONVECTION STREAMS
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机译:通过对流通风对露天矿进行通风的方法
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摘要
method вентиляций quarries конвективными струями from heat sources include the movement of heat sources отличающийс expecting consolations, so thatin order to повышени efficiency вентил ции by измен
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