Baijiantan formation of UpperTriassic (T_3) could be a sequence of fan delta-lake and lake-bottom fandeposit ;
上三叠统白碱滩组为扇三角洲—湖及湖底扇沉积体系；
2
Middle fan was favorable occurrence in enriching manganese carbonate deposit.
中扇是碳酸锰矿有利赋存部位。
3
CAD program package for the centrifugal fan of utility boiler has been developed in consideration of its low running efficiency, wearing and ash deposit.