1067
Gaynor and co-workers as well as Qian , showed that the Heaviside Projection offered an alternative means to constraining the overhang angles in TO-solutions .
 material: as; material: as; process parameter: overhang angles
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:
 material: as; material: as; process parameter: overhang angles