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The main challenge is the selection of such an idle time capable of ensuring the required interpass temperature , because the cooling rate of the workpiece changes throughout the process , entailing the need for a different idle time between the deposition of subsequent layers to achieve a constant interpass temperature.This paper proposes an innovative approach to schedule the deposition of interlayer idle times for wire‐arc additive manufacturing process .
 process parameter: interpass temperature; process parameter: cooling rate; concept or principle: workpiece; concept or principle: process; concept or principle: deposition; process parameter: interpass; concept or principle: deposition; manufacturing process: additive manufacturing process
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: interpass temperature, cooling rate, workpiece, process, deposition, interpass, deposition, additive manufacturing process 
Answer:
 process parameter: interpass temperature; process parameter: cooling rate; concept or principle: workpiece; concept or principle: process; concept or principle: deposition; process parameter: interpass; concept or principle: deposition; manufacturing process: additive manufacturing process