lead-antimony-tin alloy
51Crystal — /kris tl/, n. 1. a city in SE Minnesota, near Minneapolis. 25,543. 2. a female given name. * * * I Any solid material whose atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Each of a crystal s… …
52Silver — This article is about the chemical element. For the color, see Silver (color). For other uses, see Silver (disambiguation). palladium ← silver → cadmium …
53silver processing — Introduction preparation of the ore for use in various products. Silver has long been valued for its white metallic lustre, its ability to be readily worked, and its resistance to the corrosive effects of moisture and oxygen. The… …
54industrial glass — Introduction solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …
55Germanium — (pronEng|dʒɚˈmeɪniəm) is a chemical element with the symbol Ge and atomic number 32. It is a lustrous, hard, silver white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Germanium has five naturally… …
56metalwork — metalworker, n. /met l werrk /, n. objects made of metal. [1840 50; METAL + WORK] * * * Useful and decorative objects fashioned of various metals. The oldest technique is hammering. After с 2500 BC, casting was also used, molten metal being… …
57Niobium — zirconium ← niobium → molybdenum V ↑ Nb ↓ Ta …
58Copper — For other uses, see Copper (disambiguation) …
59Babbitt metal — noun an alloy of tin with some copper and antimony; a lining for bearings that reduces friction • Syn: ↑babbitt • Derivationally related forms: ↑babbitt (for: ↑babbitt) • Hypernyms: ↑alloy, ↑ …
60History of printing — The history of printing began as an attempt to make easier and reduce the cost of reproducing multiple copies of documents, fabrics, wall papers and so on. Printing streamlined the process of communication, and contributed to the development of… …
