网站首页 汉语 德语 英语
The nitride of boron, BN, a solid compound made synthetically and noted for its hardness and stability.
Mid 19th century.
雅致网英汉双解词典包含236457条英汉翻译词条,涵盖了常用英语单词及词组短语的翻译及用法,是英语学习的必备工具。