集合: gather; assemble; muster; ca ...覆盖: cover; overlap问题: question; problem集合覆盖: set covering覆盖问题: covering problem顶点覆盖问题: vertex cover problem确切覆盖问题: exact cover problem膝盖问题: knee problems有膝盖问题: knee problems标准混合覆盖: standard cover mixtures组合复盖问题: combinatorial covering problem分支条件组合覆盖: branch condition combination coverage集合问题: problems involving overlapping sets集合划分问题: set partitioning problem集合与串的问题: set and string problems与集合有关的问题: problem involving sets集合: 1.(聚集) gather; assemble; muster; call together 紧急集合 emergency muster; 集合在一起 assemble together; 集合 ! (口令) fall in! 学生在学校礼堂集合。 the pupils assembled in the school hall. 我们七点三刻在饭店门口集合。 we'll gather at the gate of the hotel at a quarter to eight.2.[数学] [自动化] [计算机] assemblage; set; collection; rendezvous; ensemble; aggregation; 集合城市 conurbation; 集合地点 assembling place; 集合点 meeting point; 集合函数 set function; 集合号 bugle call for fall-in; assembly; 集合体 aggregate; plural; complex集合!: Fall in!覆盖: 1.(遮盖) cover; overlap 青松覆盖的山峦 hills covered with pinetrees; 地上覆盖着厚厚的积雪。 the ground was covered over with thick snow. 秧苗上面覆盖着塑料薄膜。 the rice seedlings were covered with plastic sheeting.2.(植被) plant cover; vegetation3.(保护层, 覆盖物) cover; covering; overjet; blanket; mulch; coverage 双叶覆盖 two-sheeted covering; 树木覆盖率 tree coverage问题: 1.(需回答的题目) question; problem 解答问题 solve a problem; 提问题 ask a question2.(需研究解决的矛盾等) problem; matter 问题的关键 the heart of the matter; key to the question; key to the solution of a question; 问题的实质 essence of the problem [question]; 问题成堆 a satchel [a batch] of questions; 难问题 a troublesome problem; 共同关心的问题 questions of common interest; 关键问题 a key problem; 思想问题 an ideological problem; 悬而未决的问题 an outstanding issue; 原则问题 a question of principle; a matter of principle; 枝节问题 minor issue3.(事故或意外) trouble; mishap; sth. wrong 解决麻烦问题的能手 trouble shooter; 没出什么问题 without any mishap; 那机器有点问题。 something is wrong with the machine.4.(重要之点) the point; the thing 问题不在这里。 that is not the point 覆盖料,护根;覆盖: mulchlicenses集合: licenses collectionmandelbrot集合: mandelbrot set闭集合: closed set变集合: trace set