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...

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 ...

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...

Application of aluminum alloy in modern aircraftABSTRACTWith the continuous development and progress of aircraft manufacturing technology andAeronautical Materials Science,it is be...

AbstractThe teaching idea of humanism is the guiding ideology of open teaching.Itemphasizes people-oriented development.Teachers should pay more attention to theexploration of stud...

2.3.2.2脂肪酸甲酯的定量分析.122.4试验方法.4432.4.1原料油的预处理.132.4.2树脂的预处理.132.4.3间歇法预酯化试验方法132.4.4连续法预酯化试验方法360...142.4.4.1单根反应器连续预酯化试验方...

大豆根瘤固氮活性对干旱的响应摘要：在开放的试验场地中通过定量浇灌控制土壤干旱程度，对盆栽大豆进行试验测定，研究了不同干旱程度对大豆根系，重点是根瘤活性的影响。结果表明，土壤的干旱程...

AbstractInordertostudytheextractionandseparationofChinesewolfberrypolysaccharidesinlyciumbettermethodandobtainedthehighestrateofcontent,inthispaper,onthebasisofsinglefactorexperime...