查询词典 tertiary amine

The tertiary amine of MDEA was sulfonated with γ-Propane sultone, thereby converting these polyurethanes into zwitterionomers.

并通过MDEA中的第三胺与Υ-丙磺内酯反应，转化为双离子型离聚体。

The separation of iron from sulphate solutions has been firstly investigated using a mixed solvent system consisting of tertiary amine N_(235 and tributyl phosphate.

首先，采用N_(235)-TBP混合溶剂体系萃取含铁、锌、锰的硫酸盐溶液中的铁，实现铁与锌、锰的分离；然后用P_(204)萃取含锌、锰的萃余液中的锌，达到锌、锰分离的目的。

The separation of iron from sulphate solutions has been firstly investigated using a mixed solvent system consisting of tertiary amine N_(235 and tributyl phosphate. Then, zinc was extracted with di(-2-ethyIhexyl)phosphoric acidP_(204 from the raffinate in order to separate zinc and manganese.

首先，采用N_(235)-TBP混合溶剂体系萃取含铁、锌、锰的硫酸盐溶液中的铁，实现铁与锌、锰的分离；然后用P_(204)萃取含锌、锰的萃余液中的锌，达到锌、锰分离的目的。

The result shows that reaction time for tertiary amine formation is only 7min, and the yield is increased by 25%.

结果表明，生成叔胺的反应时间缩短为7min，产率增加了25%。

The proportion of the phase transfer catalyst and tertiary amine are usually in the range of about 1-5 and about 0.01-5.0 mole percent, respectively, based on total dihydroxyaromatic compound and dicarboxylic acid employed. In the second phosgenation step, the pH is raised to at least 10 and a stoichiometric phosgene excess of at least 5% is introduced.

相转移催化剂和叔胺的比例以二羟基芳族化合物和二羧酸的总量为基础计通常分别在约1―5和0.01―5.0摩尔百分数的范围内，在第二步光气化步骤中，pH值升高到至少约10，并导入超过化学计量约至少5wt％的光气。

It indicated evidently tropical floristic remnant and affinity in the Alsophila spinulosa community. Comparing with the fossil flora from late Cretaceous and Tertiary (i.e. Northeast China flora, Fushun flora in Liaoning, Jinggu flora in Yunnan and Shanwang in Shandong) in China, pteridophyte flora of the Reserve was quite similar to that of late Cretaceous. Nevertheless, its spermatophyte flora was little similar to that of Tertiary, where angiosperm were booming in that period.

将之与中国晚白垩纪和新生代第三纪中国东北、辽宁抚顺、云南景谷、山东山旺化石植物类群相比，发现桫椤群落中蕨类植物成分与其晚白垩纪化石植物群有着高度的相似性，而其种子植物组成与其后兴起的第三纪被子化石群不甚相似。

So the effect of different solvents, such as methanol, ethanol, butanol, tertiary butanol, isoamyl alcohol, tertiary amyl alcohol, diethyl ether and cyclohexane, on the reaction was explored.

在文献所报道的应用K〓CO〓作催化剂、CH〓I既作促进剂又作部分反应物的由原料甲醇与二氧化碳直接合成碳酸二甲酯工作的基础上，在体系中加入离子液体emimBr后，研究了emimBr对合成反应的影响。

The cold state modelling test and theoretical analysis for arc tangent tertiary air determined the arc tangent degree of tertiary air.

对三次风反切进行冷态模化试验和理论分析，确定了三次风反切角度。

Leaves simple, commonly opposite and decussate with one of a pair slightly smaller than other, rarely verticillate or alternate by abortion of one of a pair, usually 1-4(or 5) secondary veins on each side of midvein, originating at or near base and anastomosing apically, tertiary veins numerous, parallel, and connecting secondary veins and midvein but in Memecylon secondary veins pinnate and tertiary veins reticulate.

托叶无。单叶，通常对生和交互对生的具其中一片较小的叶，很少轮生的或由于一对中一枚败育而互生，通常次脉在中脉两边各1-4(或5)，发生在基部或近基部，在顶部网结，支脉多数，平等，与次脉和中脉相连但在 Memecylon中，次脉羽状和支脉网状。

Quaternary ice age it is a refuge for Tertiary flora and fauna, which retained a large number of biological Tertiary relict species.

它在第四纪冰川期是第三纪动植物的避难所，因而保留了大量第三纪生物残遗种。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48