“directory search engine”的概念、定义、翻译、参考文献-科学参考

单词	directory search engine
释义	directory search engine Encyclopedia 管理学目录型搜索引擎释 directory search engine目录型搜索引擎以人工方式或半自动方式搜集信息资源，由编辑人员对信息资源进行分门别类，并放置到事先确定的、具有层级关系的类目体系中形成的检索系统。又称网络资源指南。
随便看	ultrasonic physics ultrasonic power ultrasonic power meter ultrasonic power supply ultrasonic probe ultrasonic processing tools ultrasonic processing transducer ultrasonic Q switching ultrasonic Q-switching ultrasonic reactor ultrasonic rock specimen tester ultrasonics ultrasonic sensor ultrasonic soldering ultrasonic sound ultrasonic spectrum analysis ultrasonic stage recorder ultrasonic stroboscope ultrasonic surface treatment ultrasonic testing ultrasonic test instrument ultrasonic therapy ultrasonic thickness meter ultrasonic tissue phantom ultrasonic transducer

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