AbstractOur country is more and more strict to the quality of agricultural products,we will take alot of methods to improve the competitiveness of the watermelon market,the purpose...

ABSTRACTWith the human life level unceasing enhancement,some volatileorganic matter pollution is serious.Formaldehyde is a common airpollutants has been confirmed by the world heal...

nP/(nP+BaP)、BaA(BaA+Chry)和Fla(Fla+Pyr)等比值法进行分析，其标准为：InP/(InP+BghiP)

由于城近年来镇经济迅速发展和人口大量增长，污水的排放量日益增长，原有的蔡甸区索河龚家渡污水处理厂己经无法满足周边地区污水处理要求，因此，对污水处理厂进行提升改造势在必行。为了减少工...

四川大学博士学位论文A1ON粉体，当原料中A1配比降至11.0wt%时，A12O3采用NH4Al(SO4)2·12HO热解法自制粉体（粒径约30m,粒度分布范围宽），在N2气氛中，在1800℃煅烧3小时可以合成出单相A1ON粉体...

AbstractAmorphous alloy is a kind of metal material formed under the condition of fast cooling.Compared with the traditional crystalline alloy,amorphous alloy has excellent mechani...

金属卟啉醋酸钴复合催化对二甲苯氧化制备对苯二甲酸的反应、机理、动力学研究通过实验数据回归确定了模型参数。我们的动力学模型可以很好的解释实验现象，并从动力学方面证明了金属卟啉在催化对...

Design of Ethylene Distillation Tower Condenser for 300,000 TonsYear Ethylene PlantAbstractEthylene industry is the core of the petrochemical industry,ethylene productionis a measu...

北京理工大学珠海学院2020届本科生毕业设计Production process design of 20000 tons polystyrene resin per yearAbstractIn this design,the synthesis process is designed with an annual ou...

北京理工大学珠海学院2020届本科生毕业论文Design and production of 100 000 sets of lithium ironphosphate batteries for electric bicyclesAbstractThis graduation design is introduced b...