nuclear fuel rod
Technical term for a rod-shaped assembly containing nuclear fuel, used in nuclear reactors.
See also: 燃料棒
Many nuclear fuel rods are loaded into the nuclear reactor.
燃料棒 is a general fuel rod, while 核燃料棒 specifically contains nuclear fuel.
Compound of 核 (kaku, 'nuclear'), 燃料 (nenryō, 'fuel'), and 棒 (bō, 'rod').