Key words:Variance;heritability;effect value;hybrid1.绪论：小麦是中国乃至世界的主要粮食之一，相比较普通的小麦品种，良种小麦的适应性、产量、抗病能力等方面有着显著的又是，选育良种小...

北京理工大学珠海学院2020届本科生毕业设计Factory design of annual output of 7 000 tons of Sargassum fusiformhigh fiber biscuitAbstractWith the development of our social economy and ...

本科论文AbstractFund management is a key link in the company's financial management.Fund managementplays an important role in the company's production and operation.For company gro...

本科论文AbstractLearning English is to expand the influence of Chinese culture in the world,to lay the foundation for students to communicate with the world better,and tolet the wo...

AbstractAt present,the employment demand of college graduates and 'two-waychoice'mode provide more employment opportunities for graduates,andmake graduates'employment more independ...

地表03增加对麦田秸杆降解速率的影响摘要：近年来，由于工业发展，臭氧污染问题日益加剧，该问题与也受到了越来越多关注。多项研究表明，近地面臭氧浓度的升高不仅对人类身体健康产生危害，还会...

本科论文AbstractNowadays,with the rapid development of China's economy and information,knowledgeand talents are the core force to promote the development of economy and information...

毕业论文〔设计)1.IntroductionWriting is a primary way that individuals can communicate with others,tellingothers what they think and express their emotions,thoughts,hopes,dreams an...

毕业论文AcknowledgementsI hope to express my thanks and appreciation to my advisor,Mr.Lai Peiquan,whose careful reading has been invaluable to methrough my thesis writing.His usefu...

AbstractCongruence is the most important and fundamental method in the two triangleproblems.In addition,in junior high geometry,the study of congruent triangles is akey step in the...