When it is used, first clean and dry the disposed granularlimestone and then spread on it the polished cere; after that polish it with thin steel wool or flannelette cloth until it brightens up.
使用时先将要处理的云石抹净及干燥，用干布将加光蜡涂上，再用细钢丝棉或绒布打磨至光亮即可。
2
The former can be divided into granular and crystal grain limestone, while the latter includes clastic and shaly crystal dolomite.