It is the highest for the soft kaolin clay associated with weathered coals, which is well order;
与风化煤共生的软质高岭土中高岭石结晶度最高，为高度有序类型；
Resources of weathered coals are rich in China, It will be very promising to study and develop the industrial utilization of weathered coals.
我国风化煤资源丰富，研究开发其工业利用大有可为。
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