[数]?闭单形
... closed shell 闭壳层 closed simplex 闭单形 closed solid sphere 闭实心球 ...
?闭单体
... 闭集 closed set 闭单体 closed simplex 闭星体 closed star ...
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。