Cov lus piav qhia luv luv:

Iridium yog cov feem ntau corrosion-resistant hlau. Qhov tuab iridium yog insoluble nyob rau hauv tag nrho cov inorganic acids thiab tsis corroded los ntawm lwm cov hlau melts. Zoo li lwm pab pawg neeg hlau alloys, Iridium alloys tuaj yeem ruaj khov adsorb cov koom txoos thiab tuaj yeem siv los ua cov ntaub ntawv catalyst.