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| physical phenomena > process > physical process > phase transition > first order phase transition > ablation | 
| ablation comparison table | ||||||
| Subject | has inverse process | has initial phase | is a kind of | has domain | has final phase | has definition | 
|---|---|---|---|---|---|---|
| spallation | condensation | solid | ablation | physics | gas | The process in which an incoming beam of particles or energy collides with a substance, reacts with it, and knocks off pieces of it. | 
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