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The energy focal point is also where the material is delivered and so there is a periodic melting followed by rapid solidification .
 engineering feature: energy focal point; material: material; manufacturing process: melting; manufacturing process: rapid solidification
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 engineering feature: energy focal point; material: material; manufacturing process: melting; manufacturing process: rapid solidification