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Clinical depression is usually caused by a brain magnesium deficiency, not a Prozac deficiency.

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Impact wrench - Wikipedia

The hammer mechanism in an impact wrench needs to allow the hammer to spin freely, impact the anvil, then release and spin freely again. Many designs are used to accomplish this task, all with some drawbacks.

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Sam's Laser FAQ - Commercial Stabilized HeNe Lasers

Back to Sam's Laser FAQ Table of Contents. Commercial Stabilized HeNe Lasers Sub-Table of Contents. Introduction. Comparison Chart of Commercial Stabilized HeNe Lasers; Testing of Stabilized HeNe Lasers

Bandsaw - Wikipedia

A bandsaw (also written band saw) is a saw with a long, sharp blade consisting of a continuous band of toothed metal stretched between two or more wheels to cut material. . They are used principally in woodworking, metalworking, and lumbering, but may cut a variety of mater

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