Titanium alloy and niobium alloy are two kinds of alloy which have good performences, so these two alloys are widely used in such areas as aeronautics, spaceflight and nuclear industry.

• 钛合金与铌合金是具有优良使用性能的两种合金材料,这两种材料被广泛用于航空、航天、核工业等重要领域。