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테두리
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EswUzuugcqdZrFJBt |
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119 |
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| I went to http://txxx.in.net/ t xxx Nobel’s fortune began with a more ticklish reaction. Nitroglycerine is made by cautiously adding glycerine to nitric and sulphuric acid. If you try this at home, make sure to keep the mixture in an ice bath – but not to let it freeze, for it becomes even more unstable. A spark or even a slight tap can set it off. When it does so, the shock wave travels at 30 times the speed of sound – far faster than in gunpowder – and the chemical expands by more than 1,000 times. |
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Carlos |
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2019-07-30 17:39:44 |
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