短语词组短语lump stone coal 块状石煤A LUMP OF COAL 一块煤lump -coal combustion 块煤燃烧Lump of Coal 煤块washed lump coal 水洗块煤lump coal rate 块煤率bitumirous lump coal 烟煤块percentage of lump coal 块率rate of lump coal 原煤块率 返回 lump coal