蚀变次生变富
alteration secondary enrichment
次生生物-热解混合成因气
secondary biogenetic-pyrogenation gas
高次裂变产物
high order fission product
high-order fission product
每次裂变发出的平均中子数
average number of neutrons emitted per fission
每次裂变后的中子产额
neutrons yield per fission
nu factor
核聚变裂变混合反应堆
fusion fission hybrid reactor