天水师范学院毕业设计第四章工艺计算..124.1既知量.……………….124.1.1送进反应炉中煤的组分占比124.1.2吹风气中所含组分及其所占比重..124.1.3半水煤气中所含组分及其所占比重.124.1.4各阶段...

1.2实验方法1.2.1白头翁水溶性物质的研究方法单因素试验：以水作为溶剂，原料使用白头翁，探究了白头翁和水的比例、提取的时间，次数和温度，这几个因素对白头翁中水溶性提取率的作用。确定三个...

第三章结论与展望15参考文献....17致谢..212

AbstractChemistry is a very important subject with a perfect score of 100 in the college entranceexamination.Many contents and the related knowledge points are not closely connecte...

Weld surface appearance detection based on laser rangingAbstractThe appearance of the welded surface is the most basic and importantcomponent to control the quality of the welding....

的果实分布密度比开心形树高几倍到几十倍，而47年生树的差异不太明显。5人工授粉明显提高库尔勒香梨的座果率，但萼片脱落与人工授粉之间没有直接关系。在宏观上，萼片脱落主要与树势有关，营养...

西北工业大学博士学位论文处理，采用ummers法制备了氧化石墨烯，经分析表征得出氧化石墨烯呈半透明薄纱片层状结构，厚度在1m左右，其表面含有大量羧基和羟基等活性官能。以氧化石墨烯的沉积率为...

北京理工大学珠海学院2020届本科生毕业设计AbstractAcrylonitrile (AN)is a widely used chemical raw material and is used in variousproduction fields.With the growing demand for acrylon...

北京理工大学珠海学院2020届本科生毕业设计Process Design of Producing Biodiesel from Waste Oil withAnnual Output of 10,000 TonsAbstractWith the rapid expansiont of biodiesel industry...

北京理工大学珠海学院2020届本科生毕业设计The graduation project's mission is to make a production plant design,whose annual output is 4,000 tons of phytase preparation.AbstractThis ...