polystyrene foam core

  • 11Surfboard — For other meanings see Surfboard (disambiguation). A stack of boards in Waikiki during a surf competition …

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  • 12Casting (metalworking) — Casting iron in a sand mold In metalworking, casting involves pouring liquid metal into a mold, which contains a hollow cavity of the desired shape, and then allowing it to cool and solidify. The solidified part is also known as a casting, which… …

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  • 13Cushioning — Package cushioning is used to help protect fragile items during shipment. It is common for a transport package to be dropped, kicked, and impacted: These events may produce potentially damaging shocks. Transportation vibration from conveyors,… …

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  • 14Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …

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  • 15Lost-wax casting — A model of an apple in wax …

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  • 16Sandwich-structured composite — Composite sandwich structure panel used for testing at NASA A sandwich structured composite is a special class of composite materials that is fabricated by attaching two thin but stiff skins to a lightweight but thick core. The core material is… …

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  • 17Chobham armour — A pre series American M1 Abrams, the first main battle tank type to be protected by Chobham armour …

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  • 18founding — Process of pouring molten metal into a mold. When the metal solidifies, the result is a casting, a metal object conforming to that shape. Multitudinous metal objects are molded at some point during their manufacture. Modern foundries capable of… …

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  • 19Business and Industry Review — ▪ 1999 Introduction Overview        Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… …

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  • 20sculpture — sculptural, adj. sculpturally, adv. /skulp cheuhr/, n., v., sculptured, sculpturing. n. 1. the art of carving, modeling, welding, or otherwise producing figurative or abstract works of art in three dimensions, as in relief, intaglio, or in the… …

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