Читать книгу Henley's Formulas, Recipes and Processes (Applied Chemistry) - Various - Страница 227
Gold-plate Alloys.
Оглавление—Gold, 92 parts; copper, 8 parts.
II.—Gold, 84 parts; copper, 16 parts.
III.—Gold, 75 parts; copper, 25 parts.
—Gold, 92 parts; copper, 8 parts.
II.—Gold, 84 parts; copper, 16 parts.
III.—Gold, 75 parts; copper, 25 parts.
