ニオブなら
niobunara
1. If niobium; When niobium
Noun
#188810
1. If niobium; When niobium
1. niobium (Nb)
1. niobic acid
1. Wasn't niobium.
1. If niobium; When niobium
1. It's not niobium.; I'm not niobium.
1. Was not niobium.
1. Not niobium.
1. Probably niobium.
1. Of niobium; Niobium's