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。
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 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。
应用推荐