1绪论l973年，Halcon Scientific Development Corporation获得了通过乙酸甲酯甲基化生产的乙酸酐专利。1983年，它与美国伊士曼-柯达公司合作，建立了第一个羰基化乙酸酐生产装置。Celanese公司...

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...

Annual production of 5,000 tons of lychee wine factory designAbstractThis design is designed for an annual output of 5000 tons of litchi wine factory.Litchi (Feizixiao)and water ar...

本科论文关键词：危险化学品；危险特性：预防：应急处理AbstractIn today this is a highly developed civilization,chemical is indispensable,and the worldthat we live in is by a variety ...

AbstractProject-based teaching is a teaching model to help students raise questions,explore problems,cultivate critical thinking and improve their ability of cooperationand practic...

ABSTRACTIn this paper,the temperature field distribution of aluminum alloy with differentthickness was studied by ABAQUS finite element software.Several groups ofdifferent welding ...

摘要《化学课程标准》(2017版)系统地阐述了化学核心素养应包括的五个方面。本文以“宏观识识与微观探析”为研究对象，为研究其他核心素养奠定了基础。着重从宏观现象中识别出特定物质，从微观角...

上海大学博士学位论文深入研究了实验参数对产物形貌的影响，探讨了A1OOH的三维结构的形貌与发光性能之间的关系。通过这些新型纳米结构的合成，发展了一条简单有效的制备金属氧化物核壳及空心球...

第一篇区域地质背景长江中下游成矿带是中国东部中生代形成的成矿特色鲜明的陆内铁、铜、金、多金属成矿带，是我国重要的金属成矿带之一。长江中下游成矿带内迄今已发现200多个Cu-Fe-Au多金属矿...

ULTRAFINE PALLADIUM NANOPARTICLESIMMOBILIZED ON N-DOPED POROUS CARBONMATERIALS AS A HIGHLY EFFICIENTHYDROGENATION CATALYSTSAbstractThe performance of supported ultrafine Pd nanocat...