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鱼群探测仪
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fish finder
鱼群探测仪
向水中发射超声波脉冲,接收显示来自水中洄游鱼群和海底等反射的回波信号,以探测鱼群为目的的装置。简称探鱼仪、鱼探仪。
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World Day of Remembrance for Road Traffic Victims
World Declaration on Education for All: Meeting Basic Learning Needs
World Desertification and Drought Prevention Day
World Design Organization
World Design Survey
World Development Report
World Draughts Federation
World Earth Day
world economic crisis
world electric power industry
world-empires
World Energy Cities Partnership
World Energy Council
World Environment Day
World Ethno-National Studies
World Evangelical Fellowship
World Expo Museum
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world famous earthquake
World Federation of Acupuncture-Moxibustion Societies
World Federation of Chinese Medicine Societies
World Federation of Scientific Workers
World Federation of the Sporting Goods Industry
World Fellowship of Buddhists
world fertility survey
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