方壳型底座铸造工艺设计摘要：在中华文明5000多年的历史的创造过程中，铸造生产做出了巨大的貢献。方壳型铸造在机械制造业中的地位是特别的重要的。地不会因为质量、尺寸，材料种英及生产批量而...

北京理工大学珠海学院2020届本科毕业设计Process Simulation and Optimization of Distillation Processof Vinyl Acetate with Annual Output of 500,000 TonsAbstractThis paper studies and d...

成无定形复合结构：5、由SEM照片可以看出，改性后活性炭的表面形貌发生了很大的破坏，孔容、孔径增大，并且FeC1H2SO(稀)VAC,Al2(SO)H2SO4(稀)/AC表面有大块的平面层状结构，这与第一部分有金属...

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...

Residue Theorem And Its ApplicationAbstract:Residue theory is the main tool to study analytic function and themain way to solve function integral.This paper first gives the relevan...

AbstractComputer Networks and the Internet have been growing rapidly in China.And they are bound to play a dominant role in all aspects of modernsociety including,of course,languag...

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本科论文AbstractWith the development and maturity of Internet technology,sharing economy appears inour vision.The development of sharing economy has greatly promoted the economic g...

shows that Tainong 18 is a parent with excellent characters,and itsgeneral combining ability is very high.Moreover,Rumei 076 and 1xh-1 wereexcellent parents to increase 1000 grain ...