Ua tauniobiumua hluav taws xob?
Niobium kuj yog superconductor, uas txhais tau hais tias nws muaj hluav taws xob tshwj xeeb thaum nws txias.
Tshwj xeeb, nws tuaj yeem ua hluav taws xob tsis muaj hluav taws xob tiv thaiv.
Qhov no txhais tau hais tias thaum nws txias, nws tuaj yeem ua hluav taws xob yooj yim heev.
