1048
A well-established continuum method often referred to as the SIMP approach , first introduced by Bends , relates the elements relative densities to the effective material moduli using the power law .
 concept or principle: continuum; material: as; material: elements; material: material; process parameter: power
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:
 concept or principle: continuum; material: as; material: elements; material: material; process parameter: power