An alloy of copper (50%), aluminium (45%), and zinc (5%), used in chemical tests for the nitrate ion (in alkaline solutions it reduces a nitrate to ammonia). It was discovered by Arturo Devarda (1859–1944) in the 1890s.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。