Easycalculation
Features calcutors for arithmetic functions, scientific computations, binary conversions, areas, finanical interest, prime numbers, recurring fractions, factoring, matrices, HEX color converter, date and day calculations, as well as for measuring bandwidth.
http://Easycalculation.com/百度权重：
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收录时间：2025-06-06Cran.r-project
Network of FTP and Web servers around the world that store identical, up-to-date, versions of r code, documentation.
http://Cran.r-project.org/百度权重：
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收录时间：2025-06-06Socalgas
Services residential and business clients. Includes options to pay bill online, request services, along with information pertaining to builder services, consulting services, regulatory and safety.
http://Socalgas.com/百度权重：
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收录时间：2025-05-27btc-e
A cryptocurrency exchange based in Bulgaria where users can trade Bitcoins, Litecoins, and Namecoins, for Dollars, Euros and Rubles.
http://btc-e.com/百度权重：
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收录时间：2025-06-05Physicsforums
Bulletin boards on physics and related subjects. Includes related polls and a list of active threads.
http://Physicsforums.com/百度权重：
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收录时间：2025-06-06Opticsplanet
On-line Store with wide selection of brand name binoculars, monoculars, telescopes, spotting scopes, rifle scopes, opera glasses, laser sights, range finders, and night vision equipment. Located in Illinois.
http://Opticsplanet.com/百度权重：
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收录时间：2025-04-29Calculatorsoup
Online calculators for finance, math, algebra, trigonometry, fractions, geometry, physics, time, statistics and conversions.
http://Calculatorsoup.com/百度权重：
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收录时间：2025-06-04Newscientist
Science and technology news from the weekly magazine includes daily updates from around the world. Includes Hot Topics, interviews, book reviews and job listings.
http://Newscientist.com/百度权重：
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收录时间：2025-06-06R-project
R, also called GNU S, is a strongly functional language and environment to statistically explore data sets, make many graphical displays of data from custom command line, shell has option to save one full environment per working directory. Descriptions, documents, downloads. [Open Source, GPL]
http://R-project.org/百度权重：
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收录时间：2025-06-05Technologyreview
MIT's magazine about innovation, with online articles on specific technologies and a focus on the process by which new technology gets out of the lab and into the marketplace.
http://Technologyreview.com/百度权重：
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收录时间：2025-06-06
