Читать книгу Henley's Formulas, Recipes and Processes (Applied Chemistry) - Various - Страница 211
Ruoltz Metal.
Оглавление—This comprises 20 parts of silver, 50 of copper, 30 of nickel. These proportions may, however, vary.
—This comprises 20 parts of silver, 50 of copper, 30 of nickel. These proportions may, however, vary.
