oxygen-cutting machine
41Metallised film — Metallised films used for food packaging Metallised films (or metallized films) are polymer films coated with a thin layer of metal, usually aluminium. They offer the glossy metallic appearance of an aluminium foil at a reduced weight and cost.… …
42Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
43Vacuum packing — Salt baked chicken feet sold in China: vacuum packed and ready to eat Vacuum packing or vacuum packaging is a method of packaging that removes air from the package prior to sealing. It can involve both rigid and flexible types of packaging. The… …
44Corrugated fiberboard — is a paper based material consisting of a fluted corrugated sheet and one or two flat linerboards. It is widely used in the manufacture of corrugated boxes and shipping containers. The corrugated medium and linerboard are made of containerboard,… …
45Paperboard — Corrugated fiberboard made from paperboard Paperboard is a thick paper based material. While there is no rigid differentiation between paper and paperboard, paperboard is generally thicker (usually over 0.25 mm/0.010 in or 10 points)… …
46Carl von Linde — Professor Doctor Carl Paul Gottfried von Linde (11 June, 1842 16 November 1934) was a German engineer who developed refrigeration and gas separation technologies. Linde was a member of scientific and engineering associations, including being on… …
47List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
48World War II — the war between the Axis and the Allies, beginning on September 1, 1939, with the German invasion of Poland and ending with the surrender of Germany on May 8, 1945, and of Japan on August 14, 1945. Abbr.: WWII * * * or Second World War (1939–45)… …
49Nayirah (testimony) — refers to the controversial testimony given before the non governmental Congressional Human Rights Caucus on October 10, 1990, by a female who provided only her first name, Nayirah. In her emotional testimony, Nayirah stated that she had… …
50Tungsten carbide — Chembox new Name = Tungsten carbide ImageFile = Tungsten carbide.jpg ImageName = Tungsten carbide milling bits Section1 = Chembox Identifiers CASNo = 12070 12 1 Section2 = Chembox Properties Formula = WC MolarMass = 195.86 g·mol−1 Appearance =… …
