2143
It can be transitional in weight , yet retaining its toughness , wear resistance , impact resistance or its physical , chemical , biochemical or mechanical properties .
 material: be; process parameter: weight; machanical property: toughness; machanical property: wear resistance; concept or principle: impact; concept or principle: mechanical properties
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: be; process parameter: weight; machanical property: toughness; machanical property: wear resistance; concept or principle: impact; concept or principle: mechanical properties