In June 2021,the Ontario,Canada-based company Li-Cycle announced plans to,by the end of 2021,begin construction of North......

Pesticide efficacy tests are typically conducted in experimental plots which involve applying multiple chemical treatmen......

论述了焊线残余应力对臂架结构的影响，深入探讨了臂架失稳折臂的机理，并以１６ｔ－３０ｍ门机臂架为例。对焊接残余应力计算在臂架分析中的应用作了......

最近空间充气展开结构引起了人们的广泛关注，这是因为空间充气展开结构具有折叠体积小，重量轻和展开可靠性高等优点，于是一些空间计划......