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These composites combine the transformation toughening capabilities of zirconia along with the lower susceptibility to low temperature degradation in biological fluids .
 material: composites; manufacturing process: toughening; material: zirconia; machanical property: susceptibility; process parameter: temperature; concept or principle: degradation; material: biological fluids
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: composites; manufacturing process: toughening; material: zirconia; machanical property: susceptibility; process parameter: temperature; concept or principle: degradation; material: biological fluids