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4.2 Classical laminate plate theory CLPT is an extension of the classical plate theory for isotropic and homogeneous materials with some modifications to reflect the inhomogeneity of orthotropic materials in thickness direction .
 concept or principle: Classical laminate plate theory; concept or principle: classical plate theory; machanical property: isotropic; material: homogeneous materials; material: orthotropic; concept or principle: materials
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: Classical laminate plate theory; concept or principle: classical plate theory; machanical property: isotropic; material: homogeneous materials; material: orthotropic; concept or principle: materials