溶剂

Through the experiment,it is known that the dissolving effect of benzene to Phenanthrene in some studied organic solvent is best, moreover DMF to Carbazole is best.

通过实验可知，在所考察的溶剂中苯对菲的溶解效果最好，太原理工大学硕士学位论文而DMF对咔哇的溶解效果最好。

Three kinds of novel N-heterocyclic carbene allyl palladium complexes (Catalyst 1, 2 and 3) were synthesized. Norbornene polymerizations were carried out using three catalysts activated with methylaluminoxane in toluene.

研究了以3种N-杂环卡宾螯合烯丙基钯配合物1、2和3为催化剂，甲苯为溶剂，甲基铝氧烷为助催化剂催化降冰片烯的聚合。

The results showed that the amount of artemisinin was 1.5 g, the use level of deionized water 300 mL, the amount of reductant 1.0 g, the reaction time 1.5 h and the carbinol amount of solvent 100 mL, the yield of the product was 74.25% and the purity was 99.13% respectively.

实验表明，最佳工艺条件为：青蒿素用量为1.5 g，去离子水用量为300 mL，还原剂硼氢化钠用量为1.0 g，反应时间为1.5 h，溶剂甲醇用量为100 mL。在此条件下，产物产率为74.25%，纯度高达99.13%。

Effects of temperature, reaction time, methylating agent, solvent, molar ratio of nitromethane and carbon bisulfide on yield of 1,1-bis-2-nitroethane were discussed.

考察了反应温度、反应时间、甲基化试剂、溶剂、投料比等对于反应产物的影响，得到优化工艺条件为：反应温度35℃，反应时间3h。

Methods Capillary gas chromatography and FFAP capillary column were applied; active carbon tube was used to collect the organic solvent samples in the air of workplaces, the samples were dissolved with carbon bisulfide and determined with capillary gas chromatography.

采用毛细管气相色谱法，选用FFAP毛细管分离柱，用活性炭采集工作场所空气中有机溶剂，经二硫化碳解析后进样测定。

The residue obtained by pyrolyzing different time was analyzed by elementary analyzer and particle analyzer; Liquid produced by extracting the residue for 24h with Soxhlet extractor through toluene and carbon bisulfide were also resolved by gas chromatography and mass spectrometry, ultraviolet-visible spectrophotometer and Fourier transform infrared spectrometer.

实验首先对煤进行热解，然后对作用不同时间的煤热解残渣进行元素分析和粒度分布分析，并用有机溶剂甲苯和二硫化碳对热解残渣采用索氏提取器抽提24 h，将所得提取液采用紫外-可见光谱仪、红外光谱仪和气质联用仪等手段进行表征。

The measurement of carboxyl end group content in PBT was discussed with an automatic potentiometric titrator.

采用全自动电位滴定仪测定PBT切片的端羧基含量，对称样量、溶剂的配比、滴定剂的浓度等进行了正交优化。

In early times, the method of direct carboxylation on solid phase was often adopted in the phenol s carboxylation.

本文研究以邻甲酚为原料，在添加剂存在下，以国产煤油为溶剂，进行悬浮羧化反应，合成邻甲基水杨酸，获得了良好的效果。

This paper mainly aims to investigate the 2,3-cresotic acid s composion by carboxylation and its pilot-plant test.

酚类的羧化反应早期常采用固相直接羧化法，70年代国外逐步改用溶剂悬浮羧化法。

The influences of temperature, time, carboxylic acid dosage and catalyst dosage on the yield and optical purity were discussed.

着重研究了反应温度、反应时间、羧酸溶剂用量和催化剂的用量对产物收率和光学纯度的影响，获得了最佳工艺条件。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！