Blockchain
Blockchain.info is a utility site for the e-currency Bitcoin. The site allows you to browse the bitcoin blockchain, view currency statistics and offers a free web based online wallet.
http://Blockchain.info/百度权重：
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收录时间：2025-06-05Cern
European organization for particle physics research. Includes overview, educational resources, visit booking form and news.
http://Cern.ch/百度权重：
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收录时间：2025-06-06greenwichmeantime
Complete guide to times in every time zone in the world.
http://Wwp.greenwichmeantime.com/百度权重：
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收录时间：2025-06-05Allaboutcircuits
Online book by Tony R. Kuphaldt on dc and ac electric circuits, semiconductor devices, analog and digital circuits.
http://Allaboutcircuits.com/百度权重：
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收录时间：2025-06-04- 百度权重：
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收录时间：2025-06-04 Physicsclassroom
The Physics Classroom serves students, teachers and classrooms with easy-to-understand and ready-to-use lessons, interactive activities, and engaging curriculum.
http://Physicsclassroom.com/百度权重：
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收录时间：2025-06-08- 百度权重：
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收录时间：2025-06-06 Umbc
Information for students, parents and faculty about academic, athletic and research programs. Student and faculty home pages. Financial aid, library and computing services.
http://Umbc.edu/百度权重：
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收录时间：2025-06-06Cell
Biweekly publication of exceptional research articles in areas including molecular biology, biochemistry, cancer research, cell biology, developmental biology, genetics, immunology, microbiology, neurobiology, plant biology, structural biology and virology.
http://Cell.com/百度权重：
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收录时间：2025-06-06bitcoin
Official site offering documentation, forums and the open source client software which permits to send and receive bitcoins.
http://bitcoin.org/百度权重：
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收录时间：2025-06-06
