Using data gathered from other sources on potassium-the other major element-they were able to estimate that radiogenic heat accounts for half of the heat produced by the Earth.
使用从其他来源收集到的钾(另一种主要元素)的数据，放射热估计能够占地球产生的热量的一半。
Click on the Map element of our process to open the attributes and characteristics of the Map in the lower half of the process editor.
单击我们的流程样本的map元素，打开流程编辑器下半部分的Map的属性和特性。
This radioactive element has a half-life of some 5, 700 years.
这种放射性元素半衰期约为5700年。
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