查询词典 synthesizing

Objective: To find a new way of synthesizing borneol.

目的：研究一种合成冰片的新方法。

Catalytic activity of phosphotungstic acid on synthesizing butanone 1,2-propanediol ketal was discussed,the factors influencing the synthesis were discussed and the best conditions were found out.

探讨了磷钨酸对丁酮1，2 丙二醇缩酮合成反应的催化活性，研究了酮醇摩尔比、催化剂用量、反应时间等因素对产品收率的影响。

The quantity of catalyst was equal to 0.6% of feedstocks,the reaction temperature was 78～110 ℃,and the reaction time was 45 min. The test results have shown that H_4SiW_(12-O_(40)/MCM-48 is an excellent catalyst for synthesizing butanone 1,2-propanediol ketal with its yield reaching over 91.9%.

实验表明：H4SiW12O40/MCM-48是合成丁酮-1，2-丙二醇缩酮的良好催化剂，在n∶n(1，2-丙二醇)=1∶1.6，催化剂用量为反应物料总质量的0.6%，环己烷为带水剂，反应时间45 min的优化条件下，丁酮-1，2-丙二醇缩酮的收率可达91.9%。

Sodium bisulfate is an excellent catalyst for synthesizing butanone 1,2-propan.

以一水合硫酸氢钠为多相催化剂，由丁酮和1，2-丙二醇反应合成了丁酮1，2-丙二醇缩酮。

ChAc is an Ach's biological synthesizing enzyme and special mark of every cholinergic neuron.

ChAc是乙酰胆碱的生物合成酶，也是胆碱能神经元的特异标志酶，存在于所有胆碱能神经元，ChAc免疫反应活性被用于鉴别中枢和外周的胆碱能神经元。

For example, iron deficiency results in CHLOROSIS between the veins, particularly in young leaves that are still synthesizing chlorophyll.

例如铁的缺乏可以导致缺绿症，特别是在那些可以合成叶绿素的新生叶片中。

Influence of the concentration of Cr in the leachate and quantity of Pb(CH3COO)2 of Pb(NO3)2 on the reaction of synthesizing yellow chrome was also studied. Finally, according to the criterion and standard method in GB3184-82, some yellow chrome synthesized in the experiments was sampled and the concentration of PbCrO4 in these samples was determined. The following conclusion can be drawn from these experiments.

根据中华人民共和国国家标准GB3184-82中的规定铅铬黄颜料的技术质量指标和检测方法，测定了铬黄样品中铬酸铅含量的厂迄回【、矾士牢位论父泅仰yW盯皿'S川mS达标情况，结论如下：门）反应中重铬酸盐的浓度并不需要达到前人所提出的150～2509·L'的范围，在一定条件下低于此浓度时对铬黄生成反应并无不利影响。

Its one of the promising utilization methods of pyrite cinder to use its high iron content in synthesizing PFS.

利用烧渣中较高含量的铁元素进行无机高效水处理剂PFS的开发，是硫铁矿烧渣最有前途的综合利用途径之一。

By adopting the technology of coinstantaneously synthesizing the two products, the optimal reaction conditions are molar ratio of 1∶1 for MN to BA, in the presence of 10 7 % of catalyst at 80 ℃ for 5 h.

本文采用气-质联用技术作为烷基化工艺的评价手段[4 ] ，研究了三氯化铝催化甲基萘的长链烷基化，考察了催化剂用量、芳烷摩尔比

We find that the two methods are highly concordant, which means that the method by synthesizing the above two methods are reasonable.

这保证了两种综合评价方法组合运用的合理性。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失