The average two-wheel-drive car carries four such parts, known as constant-velocity joint (CVJ) halfshafts.

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In the automotive parts industry, the company is a reliable supplier of universal joints, bearings and constant-velocity joints to customers in more than 40 countries around the world.

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The theory explained that space is relative and not constant, and the only thing that is constant is the velocity of light.

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All this would be quite expansionary--inflationary, in fact--if velocity remained constant.

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The truth is that velocity is anything but constant.

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"In the back of their minds, people have this idea velocity ought to be steady, like a gravitational constant, " says Richard Anderson, an economist at the St.

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