In this paper, the finite element software msc.marc is used to analyze composite tubes with different layer structures.F......

During recent decades,metal-sulfonate complexes have attracted many attentions due to their unique structures and potent......

介绍可控井式氮化炉合理控制氮化温度、时间和氨分解率的渗氮工艺,使W6Mo5Cr4V2钢试样表面获得到致密无脆的ε和ε+ν′白亮层和扩......