Also, they can date the objects and they can also evaluate the state of deterioration: they have to be able to state which processes led to the deterioration because only by knowing those processes fully can you develop a technique that will stop them.
由他們來鑑定各種材質、年代、現狀、衰敗的原因及程度。唯有完全掌握了這些狀況，才能研究出最適合的技術來挽救受損古物。