technetium

/tek-nee-shee-uhm, -shuhm/US // tɛkˈni ʃi əm, -ʃəm //UK // (tɛkˈniːʃɪəm) //

锝,钍,硒,镭

Definitions

n.名词 noun

1
- : Chemistry. an element of the manganese family, not found in nature, but obtained in the fission of uranium or by the bombardment of molybdenum. Symbol: Tc; atomic weight: 99; atomic number: 43; specific gravity: 11.5.