heat radioactivity的意思|示意

Earth's internal heat, fueled by radioactivity, provides the energy for plate tectonics and continental drift, mountain building, and earthquakes.

地球内部因放射而产生的热量为板块运动、大陆漂移、造山运动和地震提供了能量。

Fourth generation reactors have better ways of dealing with "afterheat, " heat created by leftover radioactivity in a reactor, and could circumvent the problem completely.

第四代核反应堆采用更为先进的方法处理“残热”，且能彻底绕开此问题。 残热产生自反应堆中残余的放射能。

Fortunately, the radioactivity of spent fuel—and therefore its ability to generate heat—drops fairly rapidly in the first few days and weeks after it is removed from the core.

所幸，乏燃料棒的辐射量及其产热量在开始几天和移出反应核之后的几周里都在不断下降。

Emergency batteries worked for 10 more hours but when they ran out, an alternative power source had still not been connected. Residual radioactivity in the core continued to build up heat.

应急电池工作了10多个小时，但是当电量耗尽，替代电源还是没有连接上。

They produce both less heat (reducing the need for cooling systems) and less radioactivity.

它们所产生的热量(减少冷却系统的需要)和放射性也更小。