1474
The decision to use post-process heat treatment depends on the material alloying system and also the pre-heat treatment state .
 concept or principle: post-process heat; material: material; engineering feature: alloying; manufacturing process: pre-heat treatment
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:
 concept or principle: post-process heat; material: material; engineering feature: alloying; manufacturing process: pre-heat treatment