The increment of Ti-Al sheets porosity is 21%32%, and the prime reasons are considered to be the existence of the porosity in sheet bars and Al self-diffusion in the process of reactive synthesis.

烧结坯孔隙度大幅度增加，增加量为21% 32%。原板坯中的孔隙及偏扩散是造成烧结坯孔隙的主要原因。

youdao

No,it's not going to be that. But it does need to basically provide the common talking points so that allied leaders, allied presidents and prime ministers, have on one sheet of paper,one page, a set of common talking points that they can speak from to their people to explain why the alliance matters.

VOA: standard.2010.06.11