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The demand for a factor of production is a derived demand.Derived demand means that:
Needle Bearings
A type of roller bearing with long, thin cylindrical rollers resembling needles, used in applications with limited space and high load capacity.
Journal Bearings
Journal bearings are a type of plain bearing that support radial loads by enclosing the shaft along its length, offering a smooth, lubricated surface for the shaft to rotate within.
Sleeve Bearings
Bearings consisting of a cylindrically shaped liner that allows for relative motion by sliding, used in various machinery for rotational or sliding movements.
Porous Materials
Materials characterized by the presence of pores or voids, making them permeable to liquids or gases.
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