mesothorium

/mez-oh-thawr-ee-uhm, -thohr-, mes-, mee-zoh-, -soh-/US // ˌmɛz oʊˈθɔr i əm, -ˈθoʊr-, ˌmɛs-, ˌmi zoʊ-, -soʊ- //UK // (ˌmɛsəʊˈθɔːrɪəm) //

中脉,中叶,中层,中脉脉

Definitions

n.名词 noun

1
Chemistry.
- : one of two radioactive decay products of thorium, an isotope of radium or actinium.