electric arc welding machine
31Mathematics 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… …
32Niobium — zirconium ← niobium → molybdenum V ↑ Nb ↓ Ta …
33ship construction — Introduction complex of activities concerned with the design and fabrication of all marine vehicles (ship). Ship construction today is a complicated compound of art and science. In the great days of sail, vessels were designed and… …
34Transformer — This article is about the electrical device. For the toy line franchise, see Transformers. For other uses, see Transformer (disambiguation). Pole mounted distribution transformer with center tapped secondary winding. This type of transformer is… …
35Mikoyan-Gurevich MiG-25 — MiG 25 Role Interceptor and reconnaissance aircraft Manufacturer Mikoyan Gurevich OKB …
36Synthetic diamond — Synthetic diamonds of various colors grown by the high pressure high temperature technique Synthetic diamond is diamond produced in a technological process; as opposed to natural diamond, which is created in geological processes. Synthetic… …
37Sijil Pelajaran Malaysia — The Sijil Pelajaran Malaysia (SPM), or the Malaysian Certificate of Education, is a national examination taken by all fifth year secondary school students in Malaysia. It is set and examined by the Malaysian Examinations Syndicate (Lembaga… …
38Industrial process — Industrial processes are procedures involving chemical or mechanical steps to aid in the manufacture of an item or items, usually carried out on a very large scale.Industrial processes are the key components of heavy industry.Most processes make… …
39Transformer types — Circuit symbols Transformer with two windings and iron core. Step down or step up transformer. The symbol shows which winding has more turns, but not usually the …
40Challenger 2 tank — infobox Weapon is vehicle=yes name=FV 4034 Challenger 2 caption=Challenger 2 Tank type=Main battle tank origin=United Kingdom is UK=yes used by=British Army, Oman Army service= 1998 present wars= Iraq War designer= designed=1990s manufacturer=… …
