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Centerless grinding - Wikipedia

In centerless grinding, the workpiece is held between two wheels, ... One wheel, known as the grinding wheel (stationary wheel in the...

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Crusher - Wikipedia

A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. ... cutting of trees for charcoal in larger and larger regions in the United Kingdom. .... Jaw crushers are usually constructed in sections to ease the process .... is crushed due to squeezing and grinding inside the crushing chamber.

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