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- threshold fissioning material 阈裂变物质
- Fissionable material used in a nuclear reactor. 可裂变物质:用在核反应堆中的可分裂性材料。
- To produce(fissionable material) in a breeder reactor. 产生裂变的物质增殖，指在增殖反应堆里产生（可裂变的物质）
- The detector can been used to determine the burnup, cooling time and the contents of whole plutonium and whole fission material in spent fuel assemblies of the PWR and BWR types at a reprocessing and storage facility. 叉形探测器可用于后处理和贮存工厂中PWR和BWR型的乏燃料组件的燃耗、冷却时间、总钚和总裂变物质含量的测定。
- To produce(fissionable material)in a breeder reactor. 产生裂变的物质增殖，指在增殖反应堆里产生(可裂变的物质)
- The neutrinos behavior in a peaceful nuclear explosion reactor is analyzed. 238U and 232Th are used in the reactor to produce fission materials, 239Pu and 233U. 摘要研究核爆聚变电站中的一类中子学问题-如何利用核爆炸产生的大量中子生产核燃料。
- The reaction is slowed by a combination of depletion of the fissionable material and expansion of the core. 由于裂变物质的耗尽以及由于核心的膨胀，才使反应减慢下来。
- To add nonfissionable matter to(fissionable material) so as to prevent use in an atomic weapon. 使（核材料）中毒（向可裂变材料中）加入不可裂变物质以防止（这种可裂变物质）用于原子核武器
- Physics To add nonfissionable matter to (fissionable material) so as to prevent use in an atomic weapon. 使（核材料）中毒：（向可裂变材料中）加入不可裂变物质以防止（这种可裂变物质）用于原子核武器
- The reaction is slowed by a combination of depletion of the fissionable material and expansion of the core . 由于裂变物质的耗尽以及由于核心的膨胀，才使反应减慢下来。
- The cabin has a flat stone for a threshold. 这间小屋用一条扁平的石头做门槛。
- The treaty will be the threshold of lasting peace. 这个条约将成为持久和平的开端。
- In a hole in the center of this system is placed a subcritical sphere of fissionable material. 在这个系统的中心圆洞中放置一枚次临界的球形可裂变物质。
- He was on the threshold of his career. 他的事业刚刚起步。
- The material is flawed throughout. 这种材料到处是裂缝。
- The discovery of the nuclear fission is a new departure in physics. 核分子分裂的发现是物理学上的一个新起点。
- The fissionable material defined by the preceding paragraph should be reported to the Atomic Energy Council once every half-year. 前项可分裂物质，应每半年向原子能委员会申报一次。
- He had never crossed the threshold of a bar before. 他过去从未进过酒吧的门。
- But in nuclearreactors, which contain far less fissionable material, the chain reaction andthe release of energy are carefully controlled. 但在核反应堆里，可裂变的材料很少，链式反应和能量的释放都被小心的控制。
- Minimum amount of a given fissionable material necessary to achieve a self-sustaining nuclear chain reaction under specified conditions. 在核物理学中，裂变物质在规定条件下实现自持链锁反应所需要的最小量。
