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词语正丁拆分为汉字:
正字的拼音、笔画、偏旁部首、笔顺、繁体字,正字字源来历,正字演变
1. 正 [zhèng]2. 正 [zhēng]正 [zhèng]不偏斜,与“歪”相对:~午。~中(zhōng )。~襟危坐。合于法则的:~当(dāng)。~派。~楷。~规。~大光明。~言厉色。拨乱反~。合于道理的:~道。~确。~义。~气。……
丁字的拼音、笔画、偏旁部首、笔顺、繁体字,丁字字源来历,丁字演变
1. 丁 [dīng]2. 丁 [zhēng]丁 [dīng]天干的第四位,用于作顺序第四的代称:~是~,卯是卯。成年男子。人口。从事某种劳动的人:园~。丁 [zhēng]〔~~〕象声词,形容伐木、下棋、弹琴的声音。……
查询词语:正丁
汉语拼音:zhèng dīng
As a solution, toluene and isopropanol are replaced by acetone to determine isocyanate group in polyurethane.
采用丙酮代替甲苯和异丙醇作溶剂,采用二正丁胺滴定法测定聚氨酯中的异氰酸酯基。TS-1 wAS synthesized using TPABr AS the template and ammonia, n-Butylamine, TEAOH etc. were used to adjust the pH value of the gel.
本论文以TPABr为模板剂,采用氨水、正丁胺、TEAOH等调节凝胶pH值,合成了钛硅分子筛TS-1。The method is accurate, simple and low cost compared to the cardinal "di-n-butylamine-toluene" method.
与传统的甲苯-二正丁胺滴定法的对比实验表明,本方法准确、简便,有效降低了实验成本。Thus, it is urgent and important to develop the manufacture of TMP in the butanal-produced region.
因而在生产原料正丁醛的地区开发TMP的生产具有重要的经济意义。Synergistic inhibition between n-butylamine and sodium nitrate for aluminum in hydrochloric acid
正丁胺和硝酸钠对铝的缓蚀协同效应Synergistic inhibition between di-n-butylamine and sodium nitrate for aluminum in hydrochloric acid media
二正丁胺和硝酸钠在盐酸介质中对铝缓蚀的影响Synthesis of Aqueous Polyurethane Finishing Agent with n-Butylamine as Chain-Extension Agent
正丁胺为扩链剂合成水性聚氨酯皮革涂饰剂Synthesis of n-Butanal with Indirect Electrolytic Oxidation Method
间接电解氧化法合成正丁醛Kinetics and mechanism of the reaction for n-butyraldehyde with Cl atoms
正丁醛与氯原子反应的动力学和机理研究