resolidification       
noun [ U ]  physics specialized (also re-solidification) uk/ˌriː.səˌlɪd.ɪ.fɪˈkeɪ.ʃən/ us/ˌriː.səˌlɪd.ə.fəˈkeɪ.ʃən/
 重新凝固
the act or process of changing from being a liquid or gas back into a solid form again, or of making something do this
  There are a few small holes caused by the resolidification of molten material. 有几个小孔是因熔融物质重新凝固形成的。 
 We observed large-scale melting and re-solidification.
  - More examples
 - Once the temperature is brought back down, the product will solidify again, but any damage that has occurred before resolidification cannot be undone.
 - Due to fluctuating temperatures, fast cooling with resolidification may occur.
 - Figure 6 shows the surface melting, and then resolidification after laser treatment of the polymer.