extra low carbon steel
21Reinforced concrete — is concrete in which reinforcement bars ( rebars ), reinforcement grids, plates or fibers have been incorporated to strengthen the concrete in tension. It was invented by French gardener Joseph Monier in 1849 and patented in 1867.[1] The term… …
22Tricycle — For other uses, see Tricycle (disambiguation). A tricycle (often abbreviated to trike) is a three wheeled vehicle. While tricycles are often associated with the small three wheeled vehicles used by pre school age children, they are also used by… …
23Electric arc furnace — An electric arc furnace (EAF) is a furnace that heats charged material by means of an electric arc. Arc furnaces range in size from small units of approximately one ton capacity (used in foundries for producing cast iron products) up to about 400 …
24List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
25golf — golfer, n. /golf, gawlf/; Brit. also /gof/, n. 1. a game in which clubs with wooden or metal heads are used to hit a small, white ball into a number of holes, usually 9 or 18, in succession, situated at various distances over a course having… …
26Water heating — is a thermodynamic process using an energy source to heat water above its initial temperature. Typical domestic uses of hot water are for cooking, cleaning, bathing, and space heating. In industry, both hot water and water heated to steam have… …
27Peak oil — A logistic distribution shaped production curve, as originally suggested by M. King Hubbert in 1956 …
28Bit mouthpiece — This article is about the part of a bit that goes into the mouth of a horse. For an overview of bits in general, see Bit (horse). For types of bridles, see Bridle. Single jointed pelham. The mouthpiece is the part of a horse s bit that goes into… …
29Piano — Pianoforte redirects here. For earlier versions of the instrument, see Fortepiano. For other uses of Piano, see Piano (disambiguation). Piano Bösendorfer grand piano Keyboard instrument …
30Non-rocket spacelaunch — Non rocket space launch (NRS) is a launch into space where some or all needed speed and altitude is provided by non rocket means, rather than simply using conventional chemical rockets from the ground. A number of alternatives to rockets have… …
