Automobile Engineering in ME
A laminated glass upon cracking

Breaks into the form of crystals
Bursts into granular pieces
Sandwiched layer traps the fragments
Bursts into sharp edged fragments

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Automobile Engineering in ME
It is necessary to maintain the valve clearances as they

Allow for lengthening of the valves owing to the heat of combustion
Reduce the resistance to sliding that occurs between the cam and the tappet
Increase the speed at which the valves move up and down
Make the crankshaft turn smoothly

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