全部是小蝌蚪.偶的E文不行啊.555
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xe之王由化學升級到核武了.............."
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SM货真多哦。。。改天我跟你俩一起去SM夸夸 猪毛共绯 的河蟹政策。
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引用第4楼lily于2009-12-18 18:45发表的 :
SM货真多哦。。。改天我跟你俩一起去SM夸夸 猪毛共绯 的河蟹政策。
全是鸟语....还有牛人制出了HHTDD呐！！......
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国外能材论坛好多都有讨论HHTDD.
就是很多都被屏蔽了。
就是很多都被屏蔽了。
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呵呵 正在翻译中....顺便提升鸟语水平...一举多得岂不是很好吗 嘿
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先玩HHTD 然后再玩HHTDD吧。这俩差不多不是~爆速差出0.5KM/s。
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今天DIY卧病在床.....脚踝受轻伤 擦破一块皮结果由于走路摩擦 小伤变大伤 今天第3天伤口还在流着淋巴与血的混合物.......
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脚伤，最好一段时间不要穿鞋~或者就穿拖鞋。注意身体啊，这年头一步落，步步落。
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额…安抚一下你吧…我班一女生就是脚磨破了，结果没去医院，今天居然柱上拐了…
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额 这份资料我也有 要详细的 呵呵
先小小的来上一段：
1、l,4-Diformyl-2,3,5,6-tetrahydroxypiperazine. Formamide (135 g, 119 ml, 3.0 mol) was added to stirred aqueous glyoxal (40% w/w, 435 g, 3.0 mol), and the pH was adjusted to 8.5 by using aqueous sodium hydroxide solution (10 M). The temperature rose slowly to 30°C over the first 30 min, and the solution developed a yellow tinge. The exotherm subsided, and after 4 h of stirring, the mixture was left to stand for 3 days. A first crop of the product (93 g) was collected by filtration, and a second crop was obtained by adjusting the pH of the filtrate to 9, the temperature of the mixture being controlled at 25°C with ice/water and the additional product being collected after 5 h. Both crops were washed well with water, dried, and purified by digesting the solid twice in a hot mixture of dimethylformamide/water (80:20). This involved using 70 ml of this mixture for each 30 g of solid, maintaining the stirred slurry at 75°C for 30 min, then cooling it to 30°C, collecting the solid, and washing it well with water. The product was dried over a desiccant to give a white solid (204 g, 66%), which darkened substantially above 190 °C and decomposed above 210°C (lit. mp ca. 225°C dec).
先小小的来上一段：
1、l,4-Diformyl-2,3,5,6-tetrahydroxypiperazine. Formamide (135 g, 119 ml, 3.0 mol) was added to stirred aqueous glyoxal (40% w/w, 435 g, 3.0 mol), and the pH was adjusted to 8.5 by using aqueous sodium hydroxide solution (10 M). The temperature rose slowly to 30°C over the first 30 min, and the solution developed a yellow tinge. The exotherm subsided, and after 4 h of stirring, the mixture was left to stand for 3 days. A first crop of the product (93 g) was collected by filtration, and a second crop was obtained by adjusting the pH of the filtrate to 9, the temperature of the mixture being controlled at 25°C with ice/water and the additional product being collected after 5 h. Both crops were washed well with water, dried, and purified by digesting the solid twice in a hot mixture of dimethylformamide/water (80:20). This involved using 70 ml of this mixture for each 30 g of solid, maintaining the stirred slurry at 75°C for 30 min, then cooling it to 30°C, collecting the solid, and washing it well with water. The product was dried over a desiccant to give a white solid (204 g, 66%), which darkened substantially above 190 °C and decomposed above 210°C (lit. mp ca. 225°C dec).
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在没有良好防护的业余条件下最好不要玩放射性的东西吧？会“折寿”的，居里夫人就是榜样啊！
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折寿算什么...活着就是用来绽放光彩的 苟且偷生、碌碌无为的活着还不如死了好
活着的价值不在于活了多长时间，而在于为世界做出了多少贡献
没有条件，我们可以创造条件..
遇到困难，我们克服困难
决不退缩，因为我们要意识到我们所肩负的重任
任重而道远，死而后已
天下兴亡匹夫有责...难道我们连匹夫都不如吗？
一些人就甘愿自己连匹夫都不如，我可不愿！
活着的价值不在于活了多长时间，而在于为世界做出了多少贡献
没有条件，我们可以创造条件..
遇到困难，我们克服困难
决不退缩，因为我们要意识到我们所肩负的重任
任重而道远，死而后已
天下兴亡匹夫有责...难道我们连匹夫都不如吗？
一些人就甘愿自己连匹夫都不如，我可不愿！
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