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8.1 Assembly design rules As deeply discussed in , when dealing with assemblies and AM technologies , one main issue still to be adequately addressed is the geometrical product specification .
 manufacturing process: Assembly; material: As; manufacturing process: AM technologies; material: be; process parameter: specification
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:
 manufacturing process: Assembly; material: As; manufacturing process: AM technologies; material: be; process parameter: specification