1260
The integration of DfAM constraints into the optimisation algorithms remains a bottleneck for a streamlined design procedure , calling for benchmarking studies helping to identify more efficient approaches in digital AM in future work .
 concept or principle: algorithms; concept or principle: bottleneck; engineering feature: design; manufacturing process: AM
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: algorithms; concept or principle: bottleneck; engineering feature: design; manufacturing process: AM