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条目 (20+)

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Budgerigar

https://australian.museum/learn/animals/birds/budgerigar/

👍 0 详情链接

Free Online Chemistry Games

http://www.sheppardsoftware.com/Elementsgames.htm

👍 0 详情链接

MathMol

http://mathmol.net/

👍 0 详情链接

Animated Grimm Fairy Tales

http://www.grimmfairytales.com/

👍 0 详情链接

Electronic Texts Formated by Robert Stockton

http://www.cs.cmu.edu/afs/cs/user/rgs/mosaic/rgs-home.html

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From Mother Goose in Prose by Frank Baum

http://oaks.nvg.org/goose-prose.html

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Quigley, Mike

http://www.mjq.net/

👍 0 详情链接

Ames Research Center

http://www.nasa.gov/centers/ames/home/index.html

👍 0 详情链接

Astrobiology and Space Research Directorate

http://space.arc.nasa.gov/

👍 0 详情链接

How Snakebots Will Work

http://www.howstuffworks.com/snakebot.htm

👍 0 详情链接

Johnson Space Center

http://www.nasa.gov/centers/johnson/home/index.html

👍 0 详情链接

NASA Orbital Debris Program Office

http://orbitaldebris.jsc.nasa.gov/

👍 0 详情链接

Curator for Astromaterials Samples at Johnson Space Center

http://www-curator.jsc.nasa.gov/

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Space Center Houston

http://www.spacecenter.org/

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Alabama (SEAoAL)

http://www.seaoal.com/

👍 0 详情链接

Texas (SEAoT)

http://www.seaot.org/

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Structural Engineers Association of Southern California

http://www.seaosc.org/

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BridgeArt.net

http://www.bridgeart.net/

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Structural Stability

http://www.civil.northwestern.edu/people/bazant/PDFs/Papers/S36.pdf

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Wikipedia: Meteor

https://en.wikipedia.org/wiki/Meteoroid#Meteors

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