| 释义 |
plutonium 239
基本英英
英Noun:a highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel；produced by irradiating uranium 238 with slow electrons
Noun:
a highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel; produced by irradiating uranium 238 with slow electrons |