20%。并对两个器件性能改变的机理进行了分析。实验结果表现为有/无空穴阻挡层的器件BI值分别为171和142，有空穴阻挡层的器件BI值比无空穴阻挡层的器件BI值高20%左右：寿命方面，无空穴阻挡层的...

AbstractThe paper based on the welding low carbon steel Q235 steel plate as the research object,and blind hole method using simulated stress and strain measuring two ways to explor...

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生物降解包装材料的研究摘要：作为能够自源头方面将“白色污染”的问题予以解决的环境友好型材料的生物降解包装材料正以其巨大的优越性而为现在的社会越来越重视对它的技术研究开发以及推广应用...

北京理工大学珠海学院2020届本料生毕业设计Design and implementation of automatic ultrasonic testing systemfor disc water immersionAbstractFive kinds of conventional ultrasonic nondes...

AbstractAs the progress of The Times,our country's economic strength continuouslystrengthen,that is leading to the our country people's quality of life is in constantincrease,it al...

AbstractChiral side-chain liquid-crystalline polymers were graft copolymerized by usingpoly(methylhydrogeno)siloxane,a cholesteric monomer (Mi)cholesteryl4-(undecen-1-yloyloxy)benz...

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酶活和B-葡萄糖苷酶活分别达到11.13IU/mL、465.24IU/mLand4.08IU/mL,均高于摇瓶发酵水平，分批发酵动力学过程显示，突变菌YT02菌体生长和纤维素酶各组分均为部分祸联。4.利用DEAEsephadex A-25...

致谢本论文的选题、实验设计是在我导师闫红强老师的悉心指导下完成的。闫老师严谨的工作态度、渊博的知识，在我论文编写以及论文实验的过程中提供了许多的帮助，还树立了良好的榜样，在此我向闫...