4823
It is found that the tensile and flexural strength of composite materials are improved by 34 % and 29 % , respectively , compared with untreated material by using the ultrasonic amplitude of 40 μm , resin solution mass fraction of 10 % , processing speed of 15 mm/s .
 machanical property: tensile; machanical property: flexural strength; material: composite materials; material: material; material: resin; concept or principle: fraction
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: tensile, flexural strength, composite materials, material, resin, fraction 
Answer:
 machanical property: tensile; machanical property: flexural strength; material: composite materials; material: material; material: resin; concept or principle: fraction