双缩脲
- 与 双缩脲 相关的网络例句 [注：此内容来源于网络，仅供参考]
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HDI's molecular structure is a special saturated straight chain and it has highly unsaturated double bonds.It has such very lively and chemical properties that can be used to form polyurea with water. And it also reacts with polyurethane to form polyol, reacts with amine to biuret.
己二异氰酸酯分子具有特殊的直链饱和结构和含有高度不饱和双键的异氰酸酯基团，化学性质非常活泼，能够与水生成聚二脲，与多元醇反应生成聚胺酯，与胺反应生成缩二脲。
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Two novel pyrazolone derivatives 2-ethylamino-6H-5-(1-phenyl-3-methyl/phenyl-5-pyrazolone-4-ylene)-1,3,4-thiadiazine (PMCP-ETSC/DPCP-ETSC) containing NNS six-membered heterocycles were synthesized by the condensation reaction of 1-phenyl-3-methyl/phenyl-4-chloroacetyl-pyrazolone-5 with 4-ethyithiosemicarbazide. The title compounds were characterized by elemental analysis, IR, 1H NMR, 13C NMR and single-crystal X-ray diffraction.
利用1-苯基－3-甲基／苯基－4-氯乙酰基－吡唑啉酮－5与4-乙基氨基硫脲发生缩合反应，生成了2个新的双杂环化合物2-乙氨基－6H-5-（1-苯基－3-甲基／苯基－5-吡唑啉酮－4-基）－1，3，4-噻二嗪(PMCP-ETSC/DPCP-ETSC)，并对其进行元素分析、红外光谱、核磁共振表征和晶体结构分析。
- 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。