It is difficult to separate from niobium, the element above it in the periodic table, with which it shares many properties.
很难将它与铌分开，铌是周期表中钽的上面一个元素，两者具有许多共同的性质。
2
Niobium is the metallic element with the highest transition temperature.
铌是转变温度最高的金属元素。
3
The metal element constituting the electrode catalyst is preferably one metal element selected from the group consisting of niobium, titanium, tantalum and zirconium.