Pit (nuclear weapon)

The pit, named after the hard core found in fruits such as peaches and apricots, is the core of an implosion nuclear weapon – the fissile material and any neutron reflector or tamper bonded to it. Some weapons tested during the 1950s used pits made with U-235 alone, or in composite with plutonium, but all-plutonium pits are the smallest in diameter and have been the standard since the early 1960s.

单词	Plutonium pit
释义	Plutonium pit 英语百科 Pit (nuclear weapon) The pit, named after the hard core found in fruits such as peaches and apricots, is the core of an implosion nuclear weapon – the fissile material and any neutron reflector or tamper bonded to it. Some weapons tested during the 1950s used pits made with U-235 alone, or in composite with plutonium, but all-plutonium pits are the smallest in diameter and have been the standard since the early 1960s.
随便看	until doomsday Until farther notice until further advised until further notice until further orders until hell freezes over until iteration structure untility control console untility percale sheeting until kingdom come untillable until late untilled untilled land untill further notice until Until My Dying Day until now until one is blue in the face until proved otherwise until quite recently until recently until statement until structure until tecently

Plutonium pit

Pit (nuclear weapon)