目录2.4.1差热-热重分析TG-DTA).172.4.2X射线粉末衍射分析(XRD).172.4.3红外光谱分析(R)….172.4.2扫描电子显微镜分析(SEM).172.4.2X射线光电子能谱分析XPS).….17第3章泡沫镍负载多孔TiO2光阳...

过程中冻干菌剂的细胞存活率从85.59%提高至90.47%，且耗能低，菌剂制备效率高。关键词：植物乳杆菌：分子生物学鉴定：美蓝直接计数法：真空冷冻干燥：保护剂：响应面：两步真空干燥法

AbstractUnder the call of the Party Central Committee,colleges and universities in Chinahave set off a wave of 'Ideological and Political Courses'.'Ideological and politicaleducati...

Waste heat design and economic analysis of Zhuhai HotelAbstractWith the rapid development of society,the flow of people is increasing,and differenttypes of hotels have been set up ...

新冠疫情对电子商务的影响一以拉丁美洲为例【摘要】新冠肺炎疫情席卷世界各国。疫情影响了许多方面，包括电子商务和数字技术的发展。许多国家也采取了检疫措施措施，由于运输受阻，人员隔离等情...

AbstractFor the agency bookkeeping industry,it is urgent to seek the development,transformation and upgrading of the industry,but the theoretical research that can berelied on in t...

Investigation and analysis on the quality of questions asked by middleschool mathematics teachers--a case study of peiren school in donghai countyAbstract The teacher's question is...

高考理科全国卷数学应用题的若干思考AbstractWith the advancement of mathematics prospect,the employment consciousnessof mathematics knowledge becomes increasingly substantial in math...

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AbstractCongruence is the most important and fundamental method in the two triangleproblems.In addition,in junior high geometry,the study of congruent triangles is akey step in the...