checkerwork stack砖格孔道
checkerwork cell格孔
recuperator checkerwork涵义蓄热室格子房
packing coefficeent of checkerwork格子砖填充系数
checkerwork brick chamber格子砖室
solid chimney checkerwork烟道式格子体
duplicate checkerwork regenerator unit双重砖格子的蓄热室
conventional open checkerwork setting普通敞口式格砖砌筑