7195
The interface interaction between the adjacent SLS layers can be significantly improved via dynamic chemical bond linking instead of traditional physical entanglement , which leads to an improved Z-direction mechanical strength .
 concept or principle: interface; manufacturing process: SLS; material: be; concept or principle: dynamic; engineering feature: Z-direction; machanical property: mechanical strength
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: interface, SLS, be, dynamic, Z-direction, mechanical strength 
Answer:
 concept or principle: interface; manufacturing process: SLS; material: be; concept or principle: dynamic; engineering feature: Z-direction; machanical property: mechanical strength