1388
In the bottom region , where alternating bands are perpendicular to the build direction , a basketwave Widmanststructure with phase lamellae is present , while in the top region , where no such bands appear , needle-like precipitate is the main structure .
 process parameter: build direction; concept or principle: phase; material: lamellae; material: precipitate; concept or principle: structure
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:
 process parameter: build direction; concept or principle: phase; material: lamellae; material: precipitate; concept or principle: structure