二甲苯

In fact, in addition to the deethanization toluene and xylene and so few pure hydrocarbons spirits, the spirits are various structure chlorohydrocarbon.

实际上除乙烷，甲苯和二甲苯等少数几种纯烃化合物溶剂油外，溶剂油都是各种结构烃类的混合物。

Application of organic acid catalysis to the polymerization of pyrroles and pentafluorobenzaldehydes, with the xylene as reaction medium instead of expensive collidine used in the conventional methodology, resulted in a relatively high yield of TPFPPH〓.

本研究利用有机酸如氯乙酸催化吡咯和五氟化苯甲醛聚合，并以二甲苯替代传统方法所用的昂贵溶剂2，4，6-三甲基吡啶，获得了产率较高的TPFPPH〓。

Methods The target compounds were synthesized from cyclopentanone via Stork reaction, Mannich reaction and selective reduction.

方法以环戊酮为起始原料，通过Stork烯胺反应、Mannich反应、选择性还原制备目标化合物；以二甲苯致小鼠耳肿胀模型测试目标化合物的抗炎活性。

Methods The target compounds were synthesized from cyclopentanone via Stork reaction, Mannich condensation, amine exchange and selective reduction. Xylene-induced mice ear edema assay was used to evaluate their anti-inflammatory activity.

以环戊酮为起始原料，通过Stork烯胺反应、Mannich缩合反应、胺交换反应和选择性还原制备目标化合物；以二甲苯致小鼠耳肿胀模型测试目标化合物的抗炎活性。

Methods The target compounds were synthesized from cyclopentanone via Stork reaction, Mannich condensation , amine exchange and selective reduction. Xylene-induced mice ear edema assay was used to evaluate their anti-inflammatory activity.

以环戊酮为起始原料，通过Stork烯胺反应、Mannich缩合反应、胺交换反应和选择性还原制备目标化合物；并以二甲苯致小鼠耳肿胀模型测试目标化合物的抗炎活性。

The orthogonal experimental result showed that the optimum reaction conditions were as follows: citric acid 7.7 g, isoamyl alcohol 21.7 mL(the molar ratio of citric acid to isoamyl alcohol, 1:5); 1.0 g (4% of the total weight of raw material) NaHSO4H2O as catalyst; 25 mL dimethyl benzene as deaquation reagent; microwave irradiation time 15 mm; the yield of product was 83.2%(the rate of esterification was 95.1%).

通过正交实验，得到最佳的工艺条件如下：柠檬酸7.7g，异戊醇21.7mL（酸醇摩尔比为1：5）；一水合硫酸氢钠作催化剂，用量为1.0 g（为原料总质量的4%）；带水剂为二甲苯，用量为25mL；微波辐射时间为15min。

In order to simplify the procedure and obtain high quality gDNA, we alternate water-bath to dewax, extract gDNA from hepatocellular carcinoma embedded by paraffin, and amplify gene using HCC gDNA.

为了简化操作，获得更高质量的gDNA，我们采用水浴法替代二甲苯进行脱蜡，亲和层析纯化石蜡包埋肝细胞癌组织标本中基因组DNA，以纯化gDNA为模板PCR扩增看家基因。

Products are mainly Coking Benzene, toluene, xylene, heavy benzene, dimethoxy residues.

产品主要有焦化纯苯，甲苯，二甲苯，重苯，二甲残。

Benzene, toluene, dimethylbenzene can be complete mineralized into CO2 and H2O, without producing new organic materials.

苯、甲苯和二甲苯最后都完全矿化为CO2和H2O，没有生成新的有机物。

The experimental results showed that under the optimum conditions the concentrations of dimethylbenzene and butylacetate were above 95% in top distillate product, and the yield of dimethylbenzene and butylacetate was 62% and 99.45,respectively.

结果表明：在最佳的工艺条件下，二甲苯和醋酸丁酯在馏出液中的含量均达到95%以上，收率分别达到62%和99.4%。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。