drum feed
21Magazine (firearms) — Not to be confused with Magazine (artillery). A staggered column 9x19mm pistol box magazine; the top image shows the magazine loaded and ready for use while the lower image shows it unloaded and disassembled A magazine is an ammunition storage… …
22Dref Friction Spinning — Friction Spinning or Dref Spinning is a textile technology that allows very heavy count yarns and technical core wrapped yarns to be manufactured. These are most commonly used in mop yarns, flame retardants and high tech fancy yarns such as… …
23petroleum refining — Introduction conversion of crude oil into useful products. History Distillation of kerosene and naphtha The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …
24Heckler & Koch HK21 — Infobox Weapon name=HK21 caption= origin=flag|West Germany type=General purpose machine gun is ranged=yes service= used by=See Users wars= designer=Heckler Koch design date=1961 manufacturer=Heckler Koch production date= number= variants=See… …
25Laser printer — HP LaserJet 4200 series printer, installed atop high capacity paper feeder …
26Self-locking device — Self locking devices are devices intended to arrest the fall of solo climbers who climb without partners. This device is used for back rope solo climbing for ground up climbing or top rope self belaying . To date, several types of such self… …
27Woodchipper — This type of machine is used to chip large pieces of wood. A portable t …
28dairy product — Introduction milk and any of the foods made from milk, including butter, cheese, ice cream, yogurt, and condensed and dried milk. Milk has been used by humans since the beginning of recorded time to provide both fresh and storable… …
29Continuous distillation — Image 1: Typical industrial distillation towers Image 2: A crude oil vacuum distillation column as used in oil refineries …
30Low-temperature thermal desorption — NOTE: This article is largely taken verbatim from the EPA s How to Evaluate Alternative Cleanup Technologies for Underground Storage Tank Sites . cite web last = first = authorlink = coauthors = date = url = http://www.epa.gov/OUST/cat/lttd.htm… …
