“open covering”概念、定义、翻译-科学时代

单词	open covering
释义	数学词汇手册 open covering 开覆盖
随便看	bell sound Bell's theorem Bell Syndicate Bell Tower bell tower bell tower bell tower and drum tower bell trap bell tree bell-type floor drain bellwether bellwether bellwether securities bellwether securities bellwether securities belly belly belly belly belly belly belly beef belly box belly cargo belly container

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。