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What Did the Narrator Do at the Age of 12

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What did the narrator do at the age of 12?


Definitions:

Journal Bearings

Bearings that support a rotating shaft, where the shaft rotates within a lubricated sleeve or shell without rolling elements.

Tensile Strength

The maximum amount of tensile stress that a material can withstand before failure, an essential parameter in material selection and engineering design.

Hardness

A measure of a material's resistance to deformation, often assessed by indentation.

Chromium

A chemical element with symbol Cr, known for its hardness, high corrosion resistance, and ability to be polished to a high shine, often used in plating.

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