英语词汇“second category”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	second category
释义	second category second category [′sek·ənd ′kad·ə‚gȯr·ē] (mathematics) A set is of second category if it cannot be expressed as a countable union of nowhere dense sets.
随便看	office of the vice president of research office of the vice provost for research office of the victorian privacy commissioner office of the washington state climatologist office of thrift supervision office of tibet new york office of tobacco control office of tobacco prevention and control office of torres strait islander affairs office of tourism development office of tourism, trade, and economic development office of toxic substances office of tracking and data acquisition office of trade and economic analysis office of trade and industry information office of trade relations office of traffic and highway safety office of traffic and safety office of traffic injury control programs office of traffic safety office of traffic, security and operations office of training and adult education office of training and communications office of training and development office of training and education

英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。