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1 A Level -- Physics -- Current, Charge and Voltage 未开放资源 馆员登记
  Revision resources are provided covering conservation of charge, current electricity, drift velocity, conductors and insulators. Examples are provided, accompanied by videos. For e...
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2 AgEcon Search - Research in Agricultural and Applied Economics 未开放资源 机器抓取
  "AgEcon Search: Research in Agricultural and Applied Economics" collects, indexes, and electronically distributes full text copies of scholarly research in the broadly defined fiel...
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3 Airforce Technology.com 未开放资源 机器抓取
  Airforce Technology is an aerospace directory service aimed specifically at the defence sector. The resources contained in the directory include international coverage of industry ...
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4 American Geosciences Institute GeoRef Database (AGI) 未开放资源 机器抓取
  GeoRef is the most comprehensive database in the geosciences and continues to grow by more than 100,000 references a year. The database contains over 3.3 million references to geos...
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5 安庆湿地 未开放资源 专家推荐
  单位名称:安庆沿江水禽自然保护区 基本情况: 安徽安庆沿江水禽自然保护区位于安徽省西南部,长江中下游北岸,地理坐标N:29°52&prime—30°58&prime,E:115°19&prime—117°41&prime,保护区总面积120000hm², 包括华阳河湖群(龙感湖、黄大湖、泊湖)、菜子湖、白荡湖、陈瑶湖及枫沙湖。华阳湖湖群位于宿松、望江、太湖...
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6 ASCE Library 未开放资源 馆员登记
  The ASCE Library is a comprehensive online tool for locating articles of interest across all disciplines of civil engineering. The Library provides you with unprecedented access to...
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7 Australian Agricultural and Natural Resources Online 未开放资源 机器抓取
  The Queensland Regional NRM Groups Collective Ltd. (the Collective) is the lead body for regional NRM bodies in Queensland. The Collective represents the interests of the 14 reg...
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8 北极网关 未开放资源 机器抓取
  北极网关是一个有关北极的专题信息网关,通过提供北极的相关信息来促进公众和私人团体的合作。;The Arctic Portal provides a comprehensive gateway to the Arctic on the internet, increases co-operation between both public and privat...
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9 北极星智能电网在线 未开放资源 专家推荐
  中国智能电网在线是中国首个智能电网资讯门户站,包括智能电网相关市场、项目、技术等综合信息平台.;...
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10 Biblioteca Virtual del Centro de Documentación 开放资源 机器抓取
  This site provides access to the outputs of the institution. The interface is available in Spanish, German, French and English. Users may setup RSS feeds to be alerted to new conte...
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