to strengthen professional level of student affairs administration;

bring up teachers' professional level;

提高教师的专业水平；

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professional level of editors and features of electric power journals

浅议编辑人员水平与电力期刊特色

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improvement of teacher's professional level in practice

在实践中提高教师的专业化水平

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Writing learning notes to improve new nurses' professional level

撰写学习笔记提高新护士业务水平

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raising practice teaching ability and professional level of student teachers

提高师范生教育实践能力与专业化水平

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result: nurses quality and professional level had been improved.

结果：通过规范护士行为，提高了护理人员的专业素质，使护理质量和社会信誉也得以提高。

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the effective way to improve the teachers' professional level is the professional development of teachers.

提高教师专业水平的有效途径就是教师专业发展。

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improve teachers' professional level and comprehensive quality.

不断提高教师的专业水平和综合素质。

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in result, the scheme of producing 100,000 t/ a styrene by distillation was developed, through which the purity of styrene reach 99.6%, ethyl benzene 99.8% and toluene 98%.

采用该方案所得到的苯乙烯产品纯度可达99.6%，循环乙苯浓度为99.8%，副产品甲苯浓度为98%。

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the kinetics of liquid-phase oxidation of ethyl benzene using ethyl benzene hydroperoxide as an initiator has been studied in the temperature range of 130 ℃ to 160 ℃ for semi-batch operation.

研究了在半间歇操作条件下，在130&160℃的温度范围内，用乙苯氢过氧化物作引发剂的乙苯液相氧化反应动力学。

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there is no ethyl benzene accumulated in the circulating stream, and the problem of high ethyl benzene content in the adsorption feedstock for absence of disproportionation unit has been solved.

在装置循环物料中乙苯没有累积，解决了无歧化装置吸附进料中乙苯含量高的问题。

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the conversion rate of ethyl benzene has been maintained at 30% to 35% and the px content in xylene at about 22% during the whole production period.

在整个生产周期中乙苯转化率保持在30%-35%，二甲苯中PX质量分数在22%左右。

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high vacuum low bottom temperature ethyl benzene dehydrogenation liquid separation process is a kind of separation process with lower ethyl benzene loss since ethyl benzene is heated only twice in this process.

高真空低釜温乙苯脱氢液分离工艺，苯乙烯只经历2次加热，是一项苯乙烯低损耗的分离工艺。

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the possibility of preparing p-methyl styrene from p-ethyltoluene by dehydrogenation on iron oxide catalyst originally used for dehydrogenation of ethyl benzene was studied.

探讨了乙苯脱氢的氧化铁系催化剂用于对乙基甲苯脱氢制取对甲基乙烯的可能性。

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practice have been carried on the production process of ethyl benzene and starch content prediction, and the results show that the software can fulfill the function of trend prediction.

通过对化工生产过程苯乙烯装置乙苯含量和淀粉含量的建模软测量应用，结果表明软件能够实现软测量的趋势预测功能。

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the ethylene conversion of alkylation is 100% and the selectivity of ethyl benzene is more than 86.5%;

烷基化反应的乙烯转化率达100%，乙苯选择性平均在86.50%以上；

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the technology for producing styrene by catalytic dehydrogenation of ethyl benzene has been matured, and applied to large-scale industrial plants.

乙苯催化脱氢制苯乙烯过程的工艺是成熟的，并有大型工业装置。

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furthermore, the utility model also relates to a reaction system for removing multi-feeding dynamic coupling which is used to produce ethyl benzene.

另外，本实用新型还涉及一种用于制备乙苯的能消除多股进料动态耦合的反应器系统。

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synthesis of 2,2,2-trichloro-( 4-ethyl benzene) ethanol

2,2,2-三氯（4-乙苯基）乙醇的合成研究

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the analysis of utilization program of reclaiming dilute ethylene from fcc dry gas to produce ethyl benzene/ styrene

炼厂催化干气稀乙烯制取乙苯/苯乙烯利用方案分析

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