Tìm kiếm
Thorium
01
a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands
word family
thorium
thorium
Noun
Ví dụ
Tìm kiếm
a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands
word family
thorium