petrogenic grid

例句：

1. 1. The study of petrogenesis is crucial for understanding the formation of rocks and minerals.
   研究成因对于理解岩石和矿物的形成至关重要。
2. 2. Petrogenesis is a process by which rocks are transformed into minerals.
   成因过程是指将岩石转化为矿物的过程。
3. 3.The petrogenesis of the Earth's crust is still not fully understood.
   地球地壳的成因仍然不完全清楚。