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In this study , a novel “ z-pinning ” approach is described that allows continuous material to be deposited across multiple layers within the volume of the part .
 enabling technology: z-pinning; material: material; material: be; concept or principle: volume
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: z-pinning, material, be, volume 
Answer:
 enabling technology: z-pinning; material: material; material: be; concept or principle: volume