adhesive for metals
21art conservation and restoration — Maintenance and preservation of works of art, their protection from future damage, deterioration, or neglect, and the repair or renovation of works that have deteriorated or been damaged. Research in art history has relied heavily on 20th and… …
22materials science — the study of the characteristics and uses of various materials, as glass, plastics, and metals. [1960 65] * * * Study of the properties of solid materials and how those properties are determined by the material s composition and structure, both… …
23building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
24materials testing — Introduction measurement of the characteristics and behaviour of such substances as metals, ceramics, or plastics under various conditions. The data thus obtained can be used in specifying the suitability of materials for various… …
25Compacted oxide layer glaze — describes the often shiny, wear protective layer of oxide formed when two metals (or a metal and ceramic) are slid against each other at high temperature in an oxygen containing atmosphere. The layer forms on either or both the surfaces in… …
26Fire extinguisher — Extinguisher redirects here. Extinguisher may also refer to a candle snuffer. A stored pressure fire extinguisher …
27wood — wood1 woodless, adj. /wood/, n. 1. the hard, fibrous substance composing most of the stem and branches of a tree or shrub, and lying beneath the bark; the xylem. 2. the trunks or main stems of trees as suitable for architectural and other… …
28Wood — /wood/, n. 1. Grant, 1892 1942, U.S. painter. 2. Leonard, 1860 1927, U.S. military doctor and political administrator. * * * I Hard, fibrous material formed by the accumulation of secondary xylem produced by the vascular cambium. It is the… …
29Aluminium alloy — Aluminium alloys are alloys of aluminium, often with copper, zinc, manganese, silicon, or magnesium. They are much lighter and more corrosion resistant than plain carbon steel, but not quite as corrosion resistant as pure aluminium. Bare… …
30photoengraving — /foh toh en gray ving/, n. 1. a photographic process of preparing printing plates for letterpress printing. 2. a plate so produced. 3. a print made from it. [1870 75; PHOTO + ENGRAVING] * * * Any of several processes for producing printing plates …
