科学网站目录　/　此网站目录下共收录234个优秀网站

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  Arkive

  An extensive collection of thousands of videos, images and fact-files illustrating the world's species gathered into one centralised digital library.

  http://Arkive.org/
  百度权重：
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  AlexaRank：0
  收录时间：2025-07-30
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  Earthobservatory

  Explore the causes and effects of climatic and environmental change through the use of real satellite data.

  http://Earthobservatory.nasa.gov/
  百度权重：
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  AlexaRank：0
  收录时间：2025-08-01
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  Truity

  Offers descriptions of each of the 16 MBTI (tm) types, including both written material and video footage. Free and for fee testing services are available.

  http://Truity.com/
  百度权重：
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  AlexaRank：0
  收录时间：2025-08-02
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  Thatquiz

  Free math practice and testing site for students with complete class record keeping and grading for teachers.

  http://Thatquiz.org/
  百度权重：
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  AlexaRank：0
  收录时间：2025-07-30
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  Mylanguageexchange

  Language exchange learning via pen pals, text chat and voice chat using free lesson plans.

  http://Mylanguageexchange.com/
  百度权重：
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  AlexaRank：0
  收录时间：2025-07-31
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  Cadence

  Provides front-to-back design tools and services for all aspects of semiconductor design.

  http://Cadence.com/
  百度权重：
  PageRank：
  AlexaRank：0
  收录时间：2025-08-01
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  Binaryhexconverter

  Online tool for converting binary, decimal, hexadecimal and ASCII text.

  http://Binaryhexconverter.com/
  百度权重：
  PageRank：
  AlexaRank：0
  收录时间：2025-07-31
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  Mt

  Precision balances and scales, manufactures and markets related analytical instruments.

  http://Mt.com/
  百度权重：
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  AlexaRank：0
  收录时间：2025-08-01
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  Illumina

  Develops tools for the large-scale analysis of genetic variation and function. Products, biographies, careers, and contacts.

  http://Illumina.com/
  百度权重：
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  AlexaRank：0
  收录时间：2025-07-29
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  Bio-rad

  Manufactures and distributes products for a wide range of technologies including proteomics, real time PCR, electrophoresis, imaging, immunoassay, chromatography, microbiology, amplification, clinical informatics, microplate automation, immunofluorescence, molecular and cell biology.

  http://Bio-rad.com/
  百度权重：
  PageRank：
  AlexaRank：0
  收录时间：2025-07-30