internal feed hole
61gasoline engine — Most widely used form of internal combustion engine, found in most automobiles and many other vehicles. Gasoline engines vary significantly in size, weight per unit of power generated, and arrangement of components. The principal type is the… …
62petroleum 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… …
63Glossary of boiler terminology — Boilers for generating steam or hot water have been designed in countless different shapes, sizes and configurations. An extensive terminology has evolved to describe their common features. This glossary provides definitions for these terms.… …
64Medway watermills (lower tributaries) — River Medway (lower tributaries) Legend …
65Raccoon — For other species called raccoon in the genus Procyon, see Procyon (genus). For other uses, see Raccoon (disambiguation). Raccoon …
66Nobel Prizes — ▪ 2009 Introduction Prize for Peace The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …
67Hard disk drive — Hard drive redirects here. For other uses, see Hard drive (disambiguation). Hard disk drive Mechanical interior of a modern hard disk drive Date invented 24 December 1954 [1] …
68Bumblebee — Taxobox name = Bombus image width = 200px image caption = male Bombus terrestris robbing nectar regnum = Animalia phylum = Arthropoda classis = Insecta ordo = Hymenoptera familia = Apidae subfamilia = Apinae tribus = Bombini genus = Bombus genus… …
69Milling cutter — Milling cutters are cutting tools typically used in milling machines or machining centres (and occasionally in other machine tools). They remove material by their movement within the machine (e.g., a ball nose mill) or directly from the cutter s… …
70History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …
