A two-letter code that is a domain that identifies a country. For example, uk is the country code for the United Kingdom. The term is also used to refer to the country codes used when dialling a telephone number in another country.
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。