递归集类class: n. 1.阶级;社会等级。 2.学级;班级,年级,级,班 ...set: vt. (set; setting) 1.放;搁;贴;靠 ...recursive set: 递归集合recursive closed class: 递归封闭类recursive transition set: 递归转移网下载手机词典可随时随地查词查翻译