mantle heat flow

例句：

1. 1.The mantle heat flow is a key factor in determining the Earth's internal structure.
   幔层热流是决定地球内部结构的关键因素。
2. 2.The study of mantle heat flow has provided valuable insights into the Earth's geological processes.
   研究幔层热流为地球地质过程提供了宝贵的见解。
3. 3.Mantle heat flow is also used to monitor changes in the Earth's magnetic field.
   幔层热流还用于监测地球磁场的变化。