查询词典 pentaerythrite
- 与 pentaerythrite 相关的网络例句 [注：此内容来源于网络，仅供参考]
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The above resins are irregular transparent solid which are the products of esterification by pentaerythrite and the adducts of rosin and maleic anhydride.
马林酸树脂又名失水苹果酸树脂，由松香与顺丁烯二酸酐加成反应后并以多元醇酯化而制得的不规则透明粒片状固体。
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Key words: pentaerythrite; drying; vibrated fluidized bed; modification
中图分类号：TQ223.164；TQ051.892 文献标识码：A 文章编号：0253–4320（2004）06–0051–02
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Methyl nitrate, N-nitrobis (2-hydro- xyethyl)-amine dinitrate, nitroglycerine and pentaerythrite tetranitrate, it is found that AM1 method is better than the other methods for predicting molecular geometry.
三种方法的计算结果与已报道的四个化合物(硝酸甲酯、吉纳、硝化甘油和太安)的实验结果相比， AM1法较好。
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Efficient conversion of pentaerythrite with carbonyl compounds,aldehyde or ketone,to the corresponding pentaerythritol dialdehyde or diketone compounds in the presence of ammonium hydrogen sulfate under microwave irradiation without solvent was described.
无溶剂微波照射下，通过硫酸氢铵催化季戊四醇和醛、酮反应合成了季戊四醇双缩醛、酮化合物。通过IR和1HNMR对产物结构进行了表征，研究了反应条件对产率的影响，最佳反应条件为微波照射功率750 W，照射时间1.5 min
- 推荐网络例句
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Do you know, i need you to come back
你知道吗，我需要你回来
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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.
1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。
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Chapter Three: Type classification of DE structure in Sino-Tibetan languages.
第三章汉藏语&的&字结构的类型划分。