7894
Furthermore , a printer task optimized scheduling algorithm based on efficiency egalitarianism is proposed in this paper , and a robot interference avoidance strategy is designed by dividing the printing layer into several safe areas and interference areas .
 machine or equipment: printer; concept or principle: algorithm; machine or equipment: robot; engineering feature: designed; process parameter: layer; process parameter: areas; process parameter: areas
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: printer, algorithm, robot, designed, layer, areas, areas 
Answer:
 machine or equipment: printer; concept or principle: algorithm; machine or equipment: robot; engineering feature: designed; process parameter: layer; process parameter: areas; process parameter: areas