Workshop Technology
A two high rolling mill consists of two rolls which rotate

At the same speed but in opposite direction
At the same speed and in the same direction
At different speeds and in the opposite direction
At different speeds and in the same direction

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Workshop Technology
Lancing is the operation of

Removal of metal to the desired shape from the edge of a plate
Bending a sheet of metal along a curved axis
Cutting a sheet of metal in a straight line along the length
Cutting a sheet of metal through part of its length and then bending the cut portion

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