intermediate-alloy steel
71Nuclear 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,… …
72Cymbal manufacturers — manufacture Cymbals for percussionists and other musicians. Contents 1 Major cymbal manufacturers 2 Other cymbal manufacturers 2.1 Amedia Cymbals 2.2 …
73zinc — zincky, zincy, zinky, adj. zincoid, adj. /zingk/, n., v., zincked or zinced /zingkt/, zincking or zincing /zing king/. n. 1. Chem. a ductile, bluish white metallic element: used in making galvanized iron, brass, and other alloys, and as an… …
74Oil refinery — Anacortes Refinery (Tesoro), on the north end of March Point southeast of Anacortes, Washington An oil refinery or petroleum refinery is an industrial process plant where crude oil is processed and refined into more useful petroleum products,… …
75Copper — For other uses, see Copper (disambiguation) …
76Firesteel — is a piece of high carbon steel used for striking a spark, usually kept in a tinderbox together with flint and tinder. From the Iron Age onwards, the use of flint and steel was the most common method of fire lighting prior to the invention of the …
77History of metallurgy in China — Metallurgy in China has a long history. China was the earliest civilization that produced cast iron. [ In 200 BC. Srinivasan, Sharda and Srinivasa Rangnathan. 2004. India’s Legendary Wootz Steel. Bangalore: Tata Steel.… …
78Phonograph — Turntable redirects here. For other uses, see Turntable (disambiguation). Edison cylinder phonograph ca. 1899 …
79chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …
80Ferritic nitrocarburizing — Not to be confused with Carbonitriding. Ferritic nitrocarburizing is a range of case hardening processes that diffuse nitrogen and carbon into ferrous metals at sub critical temperatures. The processing temperature ranges from 525 °C… …
