How to pronounce word in English - Learn English free online - atomic number 77 - How to pronounce the english word atomic number 77 in english. Start with S. Learn from me.

atomic number 77

n. a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium

同义词： iridium Ir

n.a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium

同义词：iridiumIr

Dictionary