1) Gyrating 2) Oscillatory 3) Periodic 4) Periodical 1) Having periodic vibrations 2) Oscillatory 3) Periodic 4) Periodical 
• (p. pr. & vb. n.) of Oscillate • (a.) That oscillates; vibrating; swinging.
alternately increasing and decreasing
Os'cil·la`ting adjective That oscillates; vibrating; swinging. Oscillating engine , 
oscillating 1. That which swings or moves to and fro; vibrating.2. Of an electric current: undergoing very rapid periodic reversal of direction.3. In astronomy, a model of the universe in which expansion is followed by contraction, explosion, and expansion once more, in an infinite cycle.
A method of winding narrow strip steel over a much wider roll. Customers want to have as much steel on a coil as will fit in their machines, so they can spend less time moving the material and more time using it. By coiling the strip like fishing line (or thread) over a spool, a much longer strip can fit onto a coil of proper diameter. Oscillate-wo...
A method of winding a narrow strip of stainless steel over a much wider roll. This allows for more stainless steel per roll and allows the customer to have longer processing runs.