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The clothes fork that we usually use is cylindrical.Because it’s the shape of cylinder,so it’s easy to roll around and fall down.It can’t stand firmly .The change is that we turn the cylindrical pole into quadrate shape so it won’t roll everywhere or fall down easily. In the other hand,the quadrate shape is more easy to hold in hand.It is not the same as lubricious as the cylindrical pole.
South China Agriculture University