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3줄모양
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AAjVMubjJcKKsmvG |
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| I'm training to be an engineer http://xnxxjapanese.site/ wwwxnxx One of the stumbling blocks of developing a pneumatic tube system is the Kantrowitz limit, an esoteric aerodynamics formula that says how fast a pod can travel in a tube. Effectively, it's an issue of pressure. |
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Delbert |
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2020-04-23 12:13:33 |
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