ニオビウム
niobiumu
1. niobium
Noun
1. niobium
1. Niobium was.
1. With niobium.; Of niobium.
1. Probably niobium.
1. Niobium, probably.; It will likely be niobium.
1. It is not niobium.
1. Wasn't niobium.
1. If niobium; When niobium
1. It is not niobium.
1. If niobium; When niobium