In combination of studies on AE and mechanical process with that of fracture and damage of material, the concept of AE process is proposed.

将对材料声发射的研究，力学过程的研究，同对材料断裂损伤等破坏过程的研究相结合，提出了声发射过程的概念。

youdao

It exhibits the viscous effect under dynamic loading case, and the effect strengthens with the growth of the micro-crack density induced by the meso-damage of material.

饱和混凝土中孔隙自由水的存在对材料的力学性能有显著的影响，动态工况中主要表现为自由水的粘性效应，且该效应随细观损伤引起的微裂纹密度的改变而变化。

youdao

She added that powers would not be limited to national security matters - the green paper says the procedure could be triggered by the secretary of state deciding "that certain relevant sensitive material would cause damage to the public interest if openly disclosed".

BBC: UK Politics

That means the financial damage to Lloyd's from this coincidence of horrific disasters is limited, with no material impact on the capital it holds to absorb losses.

BBC: A lesson for the banks

"The executive felt that this is the best way of providing material help to people in hardship whose homes have been badly affected by flood damage, " said Mr Robinson.

BBC: NEWS | UK | Northern Ireland | Further flooding hits parts of NI