Baijiantan formation of UpperTriassic (T_3) could be a sequence of fan delta-lake and lake-bottom fan deposit ;

上三叠统白碱滩组为扇三角洲—湖及湖底扇沉积体系；

youdao

Middle fan was favorable occurrence in enriching manganese carbonate deposit.

中扇是碳酸锰矿有利赋存部位。

youdao

CAD program package for the centrifugal fan of utility boiler has been developed in consideration of its low running efficiency, wearing and ash deposit.

针对目前许多电站锅炉风机运行效率不高，磨损与积灰严重的情况。

youdao

What you see from orbit is a deposit of material in a fan shape that is left over from the explosion.

BBC: Call for public to study Mars images