Stable size and good filter efficiency of the bituminous.尺寸稳定,沥青浸渍性好.As a result, the reduction efficiency of charcoal, anthracitic and bituminous are better than pulverized coke.结果表明:木炭 、 无烟煤、烟煤作为还原剂还原效果明显优于焦粉.The ichth...
In 1969 a ( 51 mm ) bituminous concrete overlay was placed on the concrete deck.1969年在混凝土板上铺设了51mm厚的沥青混凝土铺装层.Of all the workers in the country bituminous miners probably had best grounds for discontent.在全国所有的工人中,可能烟煤矿工不满...